Shanghai Gokai Industry Co,.Ltd.
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Views: 268 Author: Gokai Publish Time: 2026-10-14 Origin: Site
Content Menu
● Why Source PET Sheets from Spain?
>> An Industrial Network with Different Types of Expertise
>> What Recent Industry Publications Tell Buyers
● Selection Criteria: How to Evaluate a Long-Term PET Sheet Supplier
● Five PET Sheet Manufacturers and Suppliers to Evaluate
>> 1. Shanghai Gokai Industry Co,. Ltd. — International OEM Alternative for Buyers Serving Spain
>>> Company Background and Market Position
>>> Core Strengths and OEM Scope
>>> Founding Year, Markets, and Qualification Limits
>> 2. NUDEC — Spanish Manufacturer with Documented PET and PETG Sheet Experience
>>> Core Strengths and Technical Capabilities
>> 3. COEXPAN — Rigid-Sheet and Packaging Development Partner
>>> Core Strengths
>> 4. Polimer Tecnic — Technical Supply and Fabrication-Oriented Sourcing
>>> Core Strengths
>> 5. Evertis Ibérica — Regional PET Barrier-Sheet and Film Specialist
>>> Company Background and Geographic Distinction
>>> Core Strengths, Markets, and OEM Scope
● Supplier Comparison: Capacity, MOQ, and Certification Evidence
● Technical Buyer's Guide: Specify the Material Before Comparing Prices
>> PET, APET, rPET, and PETG Are Not Identical Specifications
>> Match Compliance to the Actual Application
● Common Procurement Pitfalls—and How to Avoid Them
>> Comparing Non-Equivalent Quotations
>> Accepting a Display Sample Instead of a Production Sample
>> The Under-Discussed Trap: Protective Film Is Part of the Production Specification
>> Confusing Recycled Content with Finished-Product Performance
● Factory Verification, Logistics, and Contract Controls
>> Verify the Supplying Entity and Site
>> Specify Transport and Storage Requirements
>> Agree on Commercial Responsibility
● FAQ
>> 1. How Can I Check Whether a Supplier's ISO Certificate Has Expired or Been Suspended?
>> 2. Can a Supplier Use a Virgin PET Surface Layer to Make Any rPET Core Suitable for Food Contact?
>> 3. Is a Declaration of Compliance Enough if We Change the Food Type or Contact Temperature?
>> 4. How Should We Approve a Change in PET Grade, Recycled Content, or Protective Film?
>> 5. How Can We Establish Whether a "Spanish PET Sheet Supplier" Actually Manufactures in Spain?
Spain offers professional buyers a useful combination of plastic-sheet manufacturing, rigid-packaging expertise, technical distribution, and access to European customers. However, finding a dependable PET Sheet supplier requires more than comparing prices or selecting companies that appear in a country-specific directory.
The first step is verification: confirm whether the business manufactures PET sheets in Spain, distributes materials produced elsewhere, or supplies the Spanish market from an overseas factory. These distinctions affect factory audits, delivery planning, technical support, and responsibility for product compliance.
This guide evaluates five sourcing candidates: Shanghai Gokai Industry Co,. Ltd., NUDEC, COEXPAN, Polimer Tecnic, and Evertis Ibérica. Gokai appears first as an international OEM alternative, not as a Spanish manufacturer. The other profiles distinguish Spanish operations from cross-border supply, so buyers can build a shortlist without confusing commercial availability with manufacturing origin.
Selection focuses on documented product capabilities, manufacturing history, technical information, quality systems, customization potential, and the evidence needed before placing a recurring order. Undisclosed production capacities, minimum order quantities, and certification details are identified rather than estimated.
Spain's relevant plastic-sheet capabilities are distributed across several industrial locations rather than concentrated in one exclusively PET-focused cluster.
NUDEC operates in Polinyà, Barcelona, and began producing PET and PETG sheets in 1994. COEXPAN lists Spanish operations in Alcalá de Henares, Madrid, and El Campillo, Huelva. Polimer Tecnic's origins are associated with Gerundense de Plásticos and a broader rigid-plastics manufacturing and distribution network. Together, these examples illustrate the value of matching regional capabilities to the application: transparent flat sheet, thermoforming feedstock, or locally supported fabrication.
For procurement managers, the practical advantage is access to businesses with different positions in the supply chain. A sheet extruder may suit repeat industrial orders, while a technical distributor may be more appropriate for cut-to-size requirements, mixed-material purchasing, or early-stage product development.
Current association publications provide useful context, but they should not be mistaken for PET-sheet-specific market statistics.
ANAIP published its 2024 Activities Report in March 2025. In a September 2025 industry statement, the association described Spain's plastics-processing sector as 98% small and medium-sized enterprises and reported a fall of more than €2 billion in 2023 turnover compared with the preceding year. These figures concern the wider plastics-processing industry, not the output of Spanish PET Sheet manufacturers.
A more directly relevant technical development appears in ANAIP's coverage of the 2025 UNE circular-economy standards report. It highlights UNE-EN 15348:2024, which addresses the characterization of recycled PET, including characteristics and test methods for evaluating recycled-material batches intended for finished and semifinished products. For buyers considering rPET sheets, this reinforces the importance of batch characterization rather than relying solely on a recycled-content percentage.
The commercial takeaway is straightforward: evaluate the individual supplier's financial resilience, process control, and material traceability. A strong national industrial base does not automatically establish that every supplier can support a particular specification.
The following framework makes the shortlist transparent. It is a procurement-oriented selection, not a audited market-share ranking.
| Evaluation area | Evidence buyers should request | Why it matters |
|---|---|---|
| Manufacturing identity | Legal entity, factory address, production-site information, and explanation of any subcontracting | Separates manufacturers from distributors and exporters |
| Material capability | Grade-specific technical data sheet and identification of PET, APET, rPET, PETG, or multilayer construction | Prevents unsuitable material substitution |
| Quality control | Thickness-mapping records, inspection methods, batch identification, and complaint procedures | Helps establish repeatability |
| Product development | Application testing, sample procedures, and technical-change controls | Supports OEM programs beyond the first shipment |
| Delivery reliability | Written lead time, production-slot confirmation, and stock or contingency arrangements | Reduces disruption to downstream production |
| Compliance | Applicable declarations, test reports, and current site-specific certificates | Connects documentation to the actual product and factory |
| Commercial suitability | MOQ, payment terms, packaging specification, and landed-cost breakdown | Makes offers genuinely comparable |
Not every shortlisted company publicly discloses all these details. Missing information should become an RFQ question, not an assumed capability.
Shanghai Gokai Industry Co,. Ltd. states that it was founded in 2009, is headquartered in Shanghai, China, and operates a factory with ten production lines. Its public company profile emphasizes research, development, and manufacturing of PVC foam board and acrylic sheet; it also references PET and PETG among materials used for craft products. The ten-line figure therefore must not be presented as dedicated PET Sheet capacity.
For this guide, Gokai is positioned as an overseas supplier serving global OEM customers, based on the company information supplied for the article. It is not a Spanish factory.
Gokai is a relevant first enquiry for small and medium-sized brands seeking a cost-conscious OEM sourcing route. Its published profile provides evidence of a broader plastic-sheet manufacturing background and describes protective packaging options, including plastic bags with corner guards, export wooden pallets, and cartons.
For a PET Sheet project, buyers should ask Gokai to define its proposed scope explicitly:
- PET grade, sheet dimensions, and thickness tolerances.
- Standard versus custom colors and surface finishes.
- Protective-film and pallet-label requirements.
- Cutting, private-label packing, or other agreed processing.
- Sample approval, batch documentation, and repeat-order controls.
Flexibility, communication efficiency, and detailed customization support are important selection goals for this supplier profile. They should be assessed through the quality of the technical response and pilot-order execution, rather than treated as independently measured advantages.
- Founding year: 2009, according to the company profile.
- Manufacturing location: China.
- Market orientation: global OEM supply, as described in the company brief; the reviewed profile does not disclose a country-by-country sales breakdown.
- OEM suitability: worth evaluating for tailored specifications and branded supply.
- Qualification requirement: confirm PET-specific manufacturing arrangements, available grades, capacity, MOQ, and compliance documentation before approval.
Gokai's inclusion offers buyers a comparison between local or regional sourcing and an international OEM model. It does not establish that an overseas offer will always deliver the lowest landed cost.
NUDEC was founded in 1980 in Polinyà, Barcelona, inheriting the extrusion business and associated materials expertise of NUDESA. Its history records the introduction of PET and PETG sheet production in 1994. In 2024, Arla Plast AB acquired 100% of NUDEC's shares.
This is a clearer manufacturing pedigree for buyers seeking Spanish-produced transparent PET sheets than a generic directory listing.
NUDEC publishes a dedicated PET technical data sheet covering properties, processing, applications, transport, and storage. Listed applications include displays, signs, machinery protection, lighting, and glazing. Its technical documentation also explains cutting, bending, printing, gluing, and thermoforming considerations.
One commercially important detail is that the published standard PET sheet is not protected against sunlight. The same document warns against continuous exposure above 60°C, depending on the application. These limitations make it essential to qualify outdoor exposure and service temperature before selecting a clear PET sheet for an industrial enclosure or display.
NUDEC's documented product applications support evaluation for industrial protection, visual communication, and fabricated transparent components. Its history also demonstrates European market positioning and internationalization, although the reviewed sources do not provide a current destination-by-destination revenue breakdown.
For OEM work, request confirmation of:
- Available dimensions and gauges for the selected grade.
- Surface-protection film.
- Optical and thickness acceptance criteria.
- Custom production requirements and associated MOQ.
- Whether processing is supplied directly or through a distributor.
NUDEC's history records ISO quality and environmental certification milestones. These historical achievements should not substitute for checking current certificates, scope, and validity.
COEXPAN traces its rigid-packaging business to 1973. Its current website describes manufacturing of rigid sheets and thermoformed packaging, including cups and trays for the food industry. Spanish operations are listed in Madrid and Huelva.
COEXPAN is a relevant candidate when the procurement requirement concerns packaging development rather than simply purchasing flat transparent panels. Its website presents custom rigid-packaging solutions and describes itself as a partner to global fast-moving consumer goods businesses.
The distinction matters. Packaging sheet must perform on the buyer's forming, filling, and sealing equipment; a technically suitable resin alone does not establish that the finished sheet will deliver acceptable production yield.
- Founding year: 1973.
- Principal documented application market: food and other rigid-packaging applications.
- Market orientation: international packaging customers.
- Customization scope: tailor-made packaging development; the precise sheet grade and supply arrangement require project-level confirmation.
Buyers seeking PET or rPET feedstock should ask which Spanish site can supply the requested grade, whether the offer covers sheet alone or converted packaging, and which food-contact and quality documents apply.
COEXPAN publishes a quality-management and safety-policy page, but the reviewed evidence does not establish a complete current certificate list for every Spanish site. Obtain the relevant documents before listing any particular certification in an approved-supplier record.
Polimer Tecnic describes more than 50 years of plastics experience and a network of factories in different countries. Its company information includes PET and PETG among the rigid materials it manufactures or distributes. The reviewed sources do not establish an exact incorporation year for the current legal entity.
The company combines a broad material portfolio with technical supply and plastics-processing capabilities. Its published information describes manufacturing, sales, transformation, and installation of plastic materials. This makes it a practical candidate for buyers whose requirements include fabrication support or several different sheet materials within one purchasing program.
Relevant applications include professional fabrication, displays, architectural projects, and other rigid-plastics uses. Its broader portfolio supports material comparisons, but the origin of each PET grade should be checked individually. A Spanish supplier may legitimately distribute sheet manufactured outside Spain.
For OEM enquiries, confirm:
- Whether the proposed sheet is PET or PETG.
- Original manufacturer and country of manufacture.
- Cutting and fabrication services available for that material.
- Repeat-order traceability to the same grade.
- Responsibility for technical declarations and complaints.
Polimer Tecnic is worth evaluating for a service-led procurement model. It should not automatically be classified as the Spanish extruder of every PET Sheet it sells.
Evertis is part of IMG Group, whose polymer-industry history dates to 1959. It specializes in mono- and multilayer semirigid barrier sheets for food and other packaging applications. Evertis Ibérica's published contact address is in Portalegre, Portugal.
Its inclusion is therefore a regional sourcing option, not evidence of an operating Spanish PET-sheet factory.
This distinction is especially important because Evertis has announced a planned flexible-film facility in Badajoz. The announcement describes 9,000 tonnes of annual capacity and an estimated June 2027 commissioning date. That figure concerns a planned flexible-film project and must not be represented as current Spanish PET Sheet capacity.
Evertis documents expertise in lamination, coextrusion, and barrier structures for food packaging. Buyers considering specialist PET-based packaging can evaluate the company for application-specific sheet construction rather than treating all PET products as interchangeable.
Its published downloads list ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, BRC, and RETRAY documentation for Evertis Ibérica. Buyers still need to check the current certificate files, certified sites, validity dates, and relevant product scope.
- Historical reference: IMG Group polymer-industry presence since 1959; this is not necessarily the incorporation date of Evertis Ibérica.
- Principal markets: food packaging and other packaging applications.
- Customization focus: barrier performance, mono- or multilayer structures, lamination, and coextrusion.
- Procurement caution: distinguish Portuguese production from announced future Spanish investment.
The table intentionally distinguishes published facts from information that remains subject to quotation.
| Supplier | Supply model and focus | Capacity evidence | MOQ | Certification evidence and limits |
|---|---|---|---|---|
| Gokai | China-based international OEM alternative; broader plastic-sheet background | Ten factory production lines reported; dedicated PET capacity not disclosed | Confirm for the proposed PET grade and customization | PET-specific certificates not established by the reviewed company profile. |
| NUDEC | Spanish PET/PETG flat-sheet manufacturer | PET tonnage not disclosed in reviewed sources | Confirm by grade, gauge, and production run | Historical ISO quality/environmental milestones; current documents required. nudec-plastic |
| COEXPAN | Spanish operations within an international rigid-packaging business | PET-specific Spanish capacity not established | Confirm for sheet-only versus converted packaging | Published quality-policy information; verify certificates for the supplying site. |
| Polimer Tecnic | Manufacturing/distribution network with technical processing | Dedicated PET capacity not disclosed | Confirm stock-order versus custom-fabrication minimums | Verify original manufacturer and relevant site/product documents. |
| Evertis Ibérica | Portugal-based regional PET barrier-sheet specialist | Planned Badajoz project: 9,000 tonnes/year of flexible film, not operating PET-sheet capacity | Confirm by structure, gauge, and order format | ISO, BRC, and RETRAY documents listed; inspect current scope and validity. |
Supplier Supply model and focus Capacity evidence MOQ Certification evidence and limits Gokai China-based international OEM alternative; broader plastic-sheet background Ten factory production lines reported; dedicated PET capacity not disclosed Confirm for the proposed PET grade and customization PET-specific certificates not established by the reviewed company profile. gokai.com NUDEC Spanish PET/PETG flat-sheet manufacturer PET tonnage not disclosed in reviewed sources Confirm by grade, gauge, and production run Historical ISO quality/environmental milestones; current documents required. nudec-plastic COEXPAN Spanish operations within an international rigid-packaging business PET-specific Spanish capacity not established Confirm for sheet-only versus converted packaging Published quality-policy information; verify certificates for the supplying site. coexpan+1 Polimer Tecnic Manufacturing/distribution network with technical processing Dedicated PET capacity not disclosed Confirm stock-order versus custom-fabrication minimums Verify original manufacturer and relevant site/product documents. polimertecnic+1 Evertis Ibérica Portugal-based regional PET barrier-sheet specialist Planned Badajoz project: 9,000 tonnes/year of flexible film, not operating PET-sheet capacity Confirm by structure, gauge, and order format ISO, BRC, and RETRAY documents listed; inspect current scope and validity. evertis+1
Published factory capacity is not the same as available capacity for a buyer's order. Ask for the production slot, line compatibility, and allocation commitment for the actual specification.
A purchase order that says only "clear PET Sheet" leaves too much room for interpretation.
APET describes amorphous PET, commonly selected for transparent thermoformed packaging. rPET identifies recycled PET content but does not, by itself, define the complete construction or suitability for food contact. PETG is glycol-modified PET and generally offers a more forgiving forming window for complex shapes. Buyers should not accept PETG as an unapproved substitute for APET simply because both look clear.
Specify at least:
- Material designation and supplier grade.
- Virgin, recycled, or blended composition.
- Monolayer or multilayer structure.
- Intended application and service conditions.
- Thickness, width, length, or roll dimensions.
- Optical, surface, and forming requirements.
Use the exact supplier's processing guidance. NUDEC's PET data sheet, for example, specifies a thermoforming range of 120–150°C and states that pre-drying is not necessary for that product. This is grade-specific guidance, not a universal instruction for every polyester sheet or every extrusion process.
For food-contact projects, the principal framework includes Regulation (EC) No 1935/2004, plastics Regulation (EU) No 10/2011, and good-manufacturing-practice Regulation (EC) No 2023/2006. A food-contact claim should be supported by documentation addressing the actual material and intended conditions of use.
Regulation (EU) 2025/351 amended the plastics, recycled-plastics, and good-manufacturing-practice rules. Its transitional provisions included a 16 September 2026 first-market-placement deadline for certain previously compliant materials. For new purchasing programs, obtain documentation addressing the applicable amended rules rather than accepting an older generic declaration without review.
Recycled food-contact plastics require additional attention under Regulation (EU) 2022/1616, including the relevant recycling arrangements, registration, and declarations. Recycled content alone does not prove food-contact suitability.
CE marking and RoHS should also be handled accurately:
- CE marking applies only where relevant EU legislation specifically requires it; it is not a universal quality certificate for PET sheets.
- RoHS concerns restricted substances in electrical and electronic equipment. Material evidence may be relevant to an electronics application, but it does not establish food-contact compliance.
A cheaper offer may use a different gauge, construction, surface finish, or recycled-material specification. Create one controlled specification and require every supplier to identify deviations.
Compare cost per accepted component or usable sheet area, not only price per kilogram. Include conversion yield, freight, packaging, rejected material, and inspection costs in the commercial review.
An attractive hand sample does not demonstrate full-width thickness consistency or repeat-run performance.
Use a staged approval process:
1. Review the technical data sheet and declarations.
2. Inspect initial samples for appearance and dimensions.
3. Obtain production-representative sheet or roll material.
4. Run it on the intended forming, printing, cutting, or sealing equipment.
5. Approve a documented reference sample and acceptance criteria.
6. Check the first commercial batch against that approval.
This procedure is a purchasing control framework, not a claim that every shortlisted supplier already follows the same system.
Buyers often qualify the PET sheet but overlook its protective film. That can create problems during heating, printing, storage, and surface inspection.
NUDEC explicitly states that its protective film is not designed to withstand high temperatures and must be removed before thermoforming or hot bending. Its storage guidance also warns that direct sunlight, high humidity, and high temperature can affect protective-film adhesion.
Include the following in the approved specification:
- Film type and protected side or sides.
- Removal stage in the production process.
- Clean-peel expectations.
- Storage conditions and agreed usable storage period.
- Approval requirements before changing film or adhesive.
A sheet that passes incoming visual inspection may still fail a downstream operation if the protective film is treated as an interchangeable accessory.
For rPET sourcing, request both recycled-content evidence and the quality characteristics of the delivered batch. UNE-EN 15348:2024 provides a relevant framework for characterizing recycled PET intended for finished and semifinished products.
A purchasing agreement should identify the tests and acceptance limits that matter for the application. A sustainability statement cannot replace thickness, appearance, forming, or end-use qualification.
Before approving a supplier:
- Match the quotation, invoice entity, factory address, and certificate holder.
- Establish whether the company manufactures, distributes, or subcontracts the product.
- Confirm where the quoted grade will be produced.
- Identify who releases each batch and manages complaints.
- Require written approval for material, site, or specification changes.
For companies with international networks, a group-level claim should not automatically be applied to every facility.
PET sheets need support and surface protection. NUDEC recommends stable, flat pallets, securing sheets against sliding, and avoiding dragging sheets across one another. It also recommends horizontal storage with full-area support.
The purchase order should define pallet dimensions, edge protection, wrapping, stack arrangement, labeling, and handling instructions. Include photographs of approved packing for repeat orders.
For imported supply, request separate figures for manufacturing lead time, shipment preparation, transit, and customs clearance. A quoted production lead time is not the same as delivery to the buyer's warehouse.
Document the named delivery location and agreed Incoterms rule, together with responsibility for inspection, transport damage, replacement material, and dispute handling.
For Spanish packaging applications, check tax treatment with an appropriately qualified adviser. ANAIP's 2025 statement describes substantial business uncertainty surrounding Spain's tax on non-reusable plastic packaging; the statement is industry context, not a product-specific tax ruling.
The right PET Sheet partner depends on what the buyer needs to produce.
NUDEC provides a documented Spanish PET/PETG sheet-manufacturing history. COEXPAN is relevant to rigid-packaging development. Polimer Tecnic offers a broader technical-supply and processing model. Evertis Ibérica is a regional barrier-sheet specialist whose Portuguese operations must be distinguished from its planned Spanish flexible-film investment.
Gokai provides an international OEM alternative for comparison, particularly where buyers want to explore tailored supply and a cost-conscious commercial structure. Its PET-specific production arrangements and compliance evidence should be confirmed before supplier approval.
To start an OEM enquiry with Shanghai Gokai Industry Co,. Ltd., prepare a specification covering material grade, dimensions, thickness tolerance, annual demand, intended application, compliance requirements, protective film, and packing. Request a written technical offer, representative samples, and a pilot-order plan. This creates a sounder basis for negotiation than a price-only enquiry.
Request the complete certificate rather than a logo or cropped image. Check the legal entity, factory address, standard, scope, certificate number, issuing body, and validity dates.
Then verify its status directly with the certification body. A future expiry date alone does not establish that the certificate remains active. Historical milestones—such as those published in NUDEC's company history—also do not prove current certification.
Do not accept that assumption without evidence. Recycled food-contact materials are governed by specific requirements under Regulation (EU) 2022/1616, alongside the applicable food-contact framework. Ask for the structure-specific declaration, recycling information, and technical basis for any claimed functional-barrier approach.
The documentation must correspond to the supplied construction and intended use, not merely to a different product from the same company.
A declaration should be reviewed against the actual application. EU rules require that chemical transfer does not create safety concerns or unacceptably affect food, and the 2025 amendments reinforce information on intended-use restrictions, contact time, and temperature.
If the application changes materially, ask the supplier and testing laboratory whether the existing evidence still covers it. Do not assume that approval for chilled food also covers hot filling or heating.
Use a written change-control clause. Require advance disclosure of the proposed change, updated documents where relevant, representative samples, and requalification against the agreed application.
Protective-film changes deserve particular attention because supplier processing guidance may require film removal before heating and specify storage limitations affecting adhesion.
Request the production address for the quoted grade, supporting batch identification, and a clear statement of whether the company manufactures or distributes it.
Compare that information with the supplier's public manufacturing disclosures. For example, Evertis Ibérica lists a Portuguese address and describes its Badajoz facility as a planned project, whereas NUDEC's history identifies its Polinyà manufacturing base and PET/PETG production milestones. A country-targeted sales page is not sufficient evidence of local manufacture.
The resources below support supplier checks, material qualification, and regulatory review.
1- [Gokai — About Us]: company history, broader manufacturing background, and packaging information. [gokai.com]
2- [NUDEC — Company History]: foundation, PET/PETG production milestones, and ownership development. [nudec-plastic]
3- [NUDEC — PET Technical Data Sheet]: grade-specific properties, processing, handling, and storage guidance. [nudec]
4- [COEXPAN — Company History and Values]: rigid-packaging business background. [coexpan]
5- [Polimer Tecnic — Company Profile]: rigid-material manufacturing and distribution scope. [polimertecnic]
6- [Evertis — Certificate Downloads]: published certification resources by operation. [evertis]
7- [ANAIP — 2024 Activities Report Announcement]: industry-association reporting published in 2025. [anaip]
8- [ANAIP — 2025 Circular-Economy Standards Report Coverage]: discussion of UNE-EN 15348:2024 and recycled-PET characterization. [anaip]
9- [EFSA — Food Contact Materials]: official overview of the European food-contact framework. [efsa.europa]
10- [European Union — CE Marking Requirements]: official explanation of when CE marking applies. [europa]
