Shanghai Gokai Industry Co,.Ltd.
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Views: 269 Author: Gokai Publish Time: 2026-10-21 Origin: Site
Content Menu
● How We Evaluate PETG Sheet Suppliers
● Why Source PETG Sheet from Spain?
>> Barcelona and Catalonia Offer a Concentrated Supplier Ecosystem
>> The Latest Industry Figures Require Careful Interpretation
● PETG Sheet Supplier Comparison: Capacity, MOQ, and Certification
● 1. Shanghai Gokai Industry Co., Ltd.: International OEM Alternative for Customized Projects
>> Company Background and Market Focus
>> Core Strengths and OEM Scope
● 2. NUDEC: Established Spanish Manufacturer of Transparent PETG Sheet
>> Company Background and Market Focus
>> Core Strengths and OEM Scope
>> Important Purchasing Limitation
● 3. Polimer Tecnic: Broad Materials Portfolio with Processing Support
>> Company Background and Market Focus
>> Core Strengths and OEM Scope
● 4. IRPEN Group: Established Plastics Network with PETG Supply
>> Company Background and Market Focus
>> Core Strengths and OEM Scope
● 5. Plastic Express: Custom-Size Supply for Displays and Fabricated Components
>> Company Background and Market Focus
>> Core Strengths and OEM Scope
● 6. Traid Villarroya: Engineering-Plastics Sourcing in Zaragoza
>> Company Background and Market Focus
>> Core Strengths and OEM Scope
● Technical Buyer's Guide: Specify the PETG Sheet Before Comparing Prices
>> PETG and APET Are Not Interchangeable Specifications
>> Confirm the Grade for the Actual Environment
>> Separate Management Certification from Product Compliance
● Common Procurement Traps and How to Avoid Them
>> 1: Approving Appearance Instead of Material Identity
>> 2: Comparing Nominal Thickness Without Tolerances
>> 3: Treating a Showroom Sample as Production Validation
>> 4: Accepting Undefined Recycled-Content Claims
>> 5: Overlooking Protective Film and Surface Acceptance
● An Often-Overlooked Procurement Safeguard: Control the Entire Material Stack
● Factory Verification, Samples, and Logistics
>> Verify Who Performs Each Operation
>> Evaluate Capacity Through an Order-Specific Commitment
>> Compare Landed Cost, Not Only the Sheet Quotation
>> Define Packing Before the Shipment Is Booked
● FAQ
>> 1. How Can I Verify Whether a Supplier's ISO Certificate Has Expired or Been Suspended?
>> 3. Does Food-Contact PETG Automatically Qualify for Medical Packaging?
>> 4. Can a Supplier Replace Virgin PETG with Recycled-Content PETG Without Changing the Product Name?
>> 5. How Can a Small Buyer Obtain OEM Customization Without Committing to an Excessive MOQ?
Spain offers several credible sourcing routes for PETG sheet: domestic extrusion manufacturers, established plastics distribution groups, and specialist converters supplying cut-to-size materials. However, these businesses do not all perform the same role. A company that manufactures acrylic sheet may distribute PETG produced elsewhere, while a local fabrication specialist may offer more practical value for a small project than a large extrusion plant. Recognizing these distinctions is essential when building a dependable supply chain.
For procurement managers, the most useful selection principle is traceability: the ability to connect the quoted specification, manufacturing source, approved sample, compliance documents, and delivered production lot.
This guide compares five Spain-based PETG sheet manufacturers and suppliers, alongside Shanghai Gokai Industry Co., Ltd., a China-based OEM alternative serving international buyers. Gokai appears first as the featured international option—not as a Spanish manufacturer or the winner of an independently audited ranking.
A credible shortlist should start with manufacturing evidence and application suitability, not promotional language.
The following evaluation framework helps buyers compare businesses with different operating models.
| Evaluation area | Evidence to request | Why it matters |
|---|---|---|
| Manufacturing identity | Legal entity, production address, manufacturer of record, and outsourced-process disclosure | Distinguishes extrusion manufacturers from distributors and converters |
| Material specification | Resin designation, technical data sheet, recycled-content declaration, and approved application | Reduces the risk of receiving a different polyester grade |
| Quality control | Thickness inspection records, optical acceptance criteria, lot identification, and complaint procedures | Makes quality measurable rather than subjective |
| Development capability | Sample-production process, drawing review, forming advice, and change-control procedure | Indicates whether the supplier can support an evolving OEM project |
| Certification and compliance | Current management-system certificates and application-specific declarations | Prevents unrelated certificates from being used as product approval |
| Delivery reliability | Confirmed production slot, stock allocation, packing specification, and dispatch milestones | Separates a sales estimate from an executable delivery plan |
| Commercial suitability | MOQ by grade, thickness, color, sheet size, and production run | Reveals whether customization remains economical at the required volume |
These are recommended purchasing criteria, not claims that every company below has passed an on-site assessment.
For initial qualification, ask each candidate to complete the same technical questionnaire. Comparing answers in a consistent format often reveals more than comparing price lists.
The Barcelona area is a practical starting point for PETG sourcing. NUDEC operates in Polinyà, Polimer Tecnic has roots in the Girona plastics industry, IRPEN's history includes manufacturing in La Llagosta, and Plastic Express operates in the Barcelona area. Their presence illustrates a regional network spanning sheet manufacture, distribution, and conversion.
For buyers, this concentration creates opportunities to compare technical materials, coordinate factory or warehouse visits, and source fabrication services within the same region. It should not, however, be interpreted as evidence that every supplier manufactures every polymer it sells.
Spain's sourcing options also extend beyond Catalonia. Zaragoza-based Traid Villarroya supplies engineering plastics and lists PETG sheet within its portfolio.
Plastics Europe's *Plastics the Fast Facts 2025* reported European plastics production of 54.6 million tonnes in 2024, an increase of 0.4% following the previous year's contraction. Europe represented approximately 12% of global plastics production in that reporting framework. These figures describe the wider plastics industry—not Spain's PETG sheet output.
The association's *Circular Economy for Plastics 2026* examines developments during 2022–2024. Its accompanying national infographics include Spain and use estimated 2024 data. Buyers should therefore distinguish the publication year from the underlying data year.
Neither report provides a verified league table of Spanish PETG sheet manufacturers. Their practical value is broader: they help procurement teams understand supply-chain conditions and evaluate circular-material claims without inventing a PETG-specific market size.
Public websites rarely disclose comparable PETG production capacity or project-specific MOQs. The table below preserves those gaps rather than replacing them with unsupported estimates.
"Not verified" means current supporting documentation was not established from the reviewed sources; it does not mean a supplier lacks certification.
| Supplier | Location and operating role | Establishment information | Public PETG capacity information | MOQ position | Certification and compliance position |
|---|---|---|---|---|---|
| Shanghai Gokai Industry Co., Ltd. | Shanghai, China; international sheet supplier and OEM option | Founded in 2009 | Company reports 10 production lines overall; PETG-specific capacity is not disclosed | Confirm by PETG specification and customization | Request current certificates and grade-specific declarations; do not infer PETG approval from other products. |
| NUDEC | Polinyà, Spain; transparent-sheet extrusion manufacturer | Founded in 1980; PET/PETG production introduced in 1994 | PETG-specific annual tonnage not established | Confirm direct-order and distributor conditions | Product technical documentation is available; verify current management-system certificates separately. |
| Polimer Tecnic | Spain; plastics manufacturing and distribution group | More than 50 years of experience stated; exact incorporation year not established | PETG-specific capacity not disclosed in reviewed material | Confirm stock-sheet versus custom-production MOQ | Request certificates for the actual manufacturing entity and selected grade. |
| IRPEN Group | Spain; plastics manufacturing and distribution group | Official group history states origins in 1955 | PETG-specific extrusion capacity not established | Confirm stock availability and project quantities | PETG page makes an FDA-related claim; obtain the precise regulatory basis and supporting documents. |
| Plastic Express | Barcelona area, Spain; plastics supplier and custom-processing business | Founding year not established from reviewed official material | PETG extrusion capacity not established | Confirm cut-to-size minimum charge and material availability | Current certificates and application-specific PETG documentation require confirmation. |
| Traid Villarroya | Zaragoza, Spain; engineering-plastics business and PETG supplier | Company states membership of the TVH group since 1968 | PETG-specific production capacity not established | Confirm sheet, cutting, and machining quantities | Request current certificates; older directory references are not proof of present validity. |
A useful commercial distinction is stock availability versus production capacity. A distributor holding the required grade may fulfill an urgent order more effectively than a manufacturer with a larger plant but no available production slot.
Shanghai Gokai Industry Co., Ltd. states that it was founded in 2009 and specializes in the research, development, and manufacture of plastic boards and sheets. Its company profile reports 10 production lines, principally discussing PVC foam board and acrylic sheet. That figure should not be presented as 10 PETG extrusion lines.
Gokai's broader portfolio includes PETG sheet and film rolls. Its PETG offering targets packaging manufacturers, display producers, printing companies, plastics processors, distributors, and OEM buyers. The company also lists Spain among its international export destinations, although it does not publish a PETG-specific sales breakdown by market.
Gokai is worth evaluating when a buyer needs coordinated sheet supply and project customization rather than only standard warehouse material.
Its published PETG services cover:
- Sheet dimensions, thicknesses, colors, and surface requirements.
- Customized cutting, drilling, and engraving.
- Printing requirements.
- Thermoforming support based on drawings, designs, or physical samples.
- Project-specific packaging discussions.
This scope makes Gokai relevant to small and midsize brands seeking an OEM partner that can discuss material selection and downstream processing together. It is a potential cost-conscious sourcing option, but any price advantage must be established through like-for-like landed-cost quotations.
Gokai's research-and-development positioning is supported by its company description, but publicly reviewed material does not establish PETG-specific laboratory staffing, development expenditure, or annual extrusion output. Buyers should request evidence appropriate to the project rather than assume those capabilities.
Similarly, communication efficiency should be tested during qualification. Send a controlled drawing revision and assess whether the response correctly addresses tolerances, material grade, tooling responsibilities, and delivery implications.
For a small-brand program, ask Gokai to separate:
1. Standard sheet supply.
2. Custom extrusion, if applicable.
3. Conversion and printing.
4. Tooling or development charges.
5. Export packing and freight.
That breakdown makes its flexibility and OEM support easier to compare objectively with Spanish stock suppliers.
NUDEC was founded in 1980 in Polinyà, Barcelona. Its published history records the introduction of PET and PETG sheet production in 1994, providing a documented manufacturing background specifically relevant to this material.
The company supplies transparent sheets for communication and display applications, lighting, building-related uses, and other industrial requirements. Its distribution reach includes international channels; a UK plastics distributor announced NUDEC as a supplier in 2025.
NUDEC offers a defined PETG product program rather than merely mentioning PETG in a broad materials list.
Its published range includes clear sheet in several standard formats. For example, its 3,050 × 2,050 mm program lists thicknesses from 1.1 mm to 15 mm, while smaller formats cover selected thinner gauges. Availability should be checked against the current quotation.
NUDEC also publishes a PETG technical data sheet and offers UV-protected options on request. These documents provide a starting point for application qualification and processing trials.
For OEM procurement, distinguish sheet customization from finished-component manufacture. Buyers requiring custom colors, nonstandard dimensions, special surfaces, or converted parts should obtain explicit confirmation of scope.
NUDEC's PETG RC range contains up to 50% ground material from its own PETG sheet manufacturing. That is a specific production-scrap claim—not automatically a claim of 50% post-consumer recycled content.
For sustainability-sensitive projects, request the exact content definition, supporting records, and any effect on the required application approvals.
Polimer Tecnic describes more than 50 years of experience in plastics manufacture and supply. Its stated origins connect to Gerundense de Plásticos and the development of Spanish acrylic manufacturing. The reviewed company pages do not establish a precise incorporation year for the present legal entity.
Its portfolio includes acrylic, PVC, polypropylene, polyethylene, PET, PETG, polystyrene, and polycarbonate. It therefore serves professional buyers across multiple plastics applications rather than operating solely as a PETG specialist.
Polimer Tecnic lists PETG sheet under product code PT0100NN and describes processing services including milling and folding, with PETG among the materials identified for relevant fabrication applications.
Its practical value lies in material comparison and project coordination. A buyer considering PETG for a display enclosure may also need to compare acrylic or polycarbonate before committing to tooling.
Potential OEM discussions should cover:
- Selection of the appropriate transparent polymer.
- Sheet supply and cut-component requirements.
- Milling, folding, and other confirmed conversion operations.
- Drawing tolerances and repeat-order consistency.
The group's manufacturing credentials do not establish that every PETG grade is extruded at a Spanish group facility. Ask for the manufacturer of record, production location, and whether the quotation covers stocked branded material or a dedicated production run.
For ODM requests, confirm responsibility for design development, tooling ownership, and intellectual property. General processing services do not automatically constitute a full product-design service.
IRPEN's official website dates the group's origins to 1955. Its history describes the establishment of IRPEN POLICRIL in La Llagosta in 1961 and the introduction of acrylic sheet extrusion in 1965. These milestones demonstrate plastics-processing experience, but they should not be confused with the start of PETG extrusion.
IRPEN's UK operation markets plastic sheets for signage, display, fabrication, glazing, and printing. PETG appears in that product portfolio as a transparent copolyester sheet for thermoforming and fabrication.
IRPEN's Spanish PETG page highlights thermoforming, handling, and processing characteristics. Its broader network makes it relevant to buyers who want PETG alongside other established sheet materials.
For OEM programs, request details on sheet formats, stock continuity, cutting options, and whether custom material requirements can be handled directly or through an upstream producer.
The PETG page uses the wording "FDA certification." Buyers should not treat this phrase as a universal approval for all food-contact or medical uses. Obtain the precise material designation, applicable regulatory provisions, conditions of use, and supporting declaration.
For Spain-bound food-contact applications, US-related statements do not replace the applicable EU documentation requirements.
Plastic Express describes a Europe-facing plastics supply business offering materials such as acrylic, polycarbonate, PVC, polypropylene, and PETG. It supplies sheets and other stock forms cut to customer requirements and operates in the Barcelona area. Its exact founding year was not established from the reviewed official material.
Its published emphasis on custom dimensions and processing makes it a relevant candidate for display prototypes, replacement panels, and projects where buyers want prepared material rather than an extrusion-scale order.
The purchasing case is especially clear when local cutting and order preparation can reduce the buyer's own processing workload.
OEM buyers should ask for:
- Cut-size tolerances.
- Edge-finish options.
- Minimum machining or order charges.
- Material identification on cut components.
- Repeat-order drawing control.
Do not assume that a cut-to-size supplier extrudes PETG itself. Request the original sheet manufacturer and ensure the supplied grade remains identifiable after cutting.
Also distinguish an economical small order from a low material price. Cutting charges, unused offcuts, protective packaging, and delivery can materially change the cost per finished component.
Traid Villarroya is based in Zaragoza and states that it has formed part of the TVH group since 1968. Its business covers engineering plastics, semifinished products, and machined parts.
This gives buyers an alternative to the Barcelona-area supply network, particularly when PETG is one item within a wider industrial-materials purchase.
The company lists PETG copolyester sheet in 2,050 × 1,250 mm dimensions and thicknesses from 2 to 12 mm. Actual stock and current specification should be confirmed before ordering.
Its broader focus on semifinished and machined products makes it relevant for industrial purchasers seeking drawing-based components or consolidated materials procurement. PETG-specific machining capability and tolerances should be confirmed for the actual part.
An older industry-directory entry refers to ISO 9001:2000. That historical reference is not evidence of a currently valid certificate. Request the latest certificate, scope, covered site, and issuing body before using certification as an approval criterion.
The same principle applies to every supplier: a dated logo or archived certificate should trigger verification, not automatic rejection or acceptance.
PETG is a glycol-modified polyester. Eastman explains that PETG's composition is designed to maintain an amorphous structure, supporting clarity, toughness, and forming performance. Its technical discussion also distinguishes PETG from APET in demanding rigid medical-packaging applications.
A purchasing specification should therefore go beyond "clear PET sheet."
Include:
- Polymer designation and approved grade.
- Manufacturer or an agreed material-identification requirement.
- Thickness and permitted variation.
- Sheet dimensions, squareness, and flatness.
- Optical acceptance criteria.
- Surface finish and protective-film requirements.
- Virgin or recycled-content conditions.
- Intended processing and end use.
- Required declarations and lot documentation.
If a supplier proposes an alternative material, require written approval before production.
A sheet suitable for an indoor display is not automatically qualified for prolonged outdoor exposure, food contact, or medical packaging.
NUDEC identifies UV-protected PETG options on request, illustrating why buyers should specify UV requirements rather than assume that all clear PETG includes outdoor protection.
Chemical compatibility also requires application-level evaluation. Gokai's PETG guidance explicitly notes that chemical type, concentration, temperature, and exposure conditions affect suitability.
Test the formed or assembled component using the actual cleaner, adhesive, ink, and service conditions wherever practical.
ISO certification, food-contact documentation, CE marking, and RoHS evidence serve different purposes.
| Document or claim | What the buyer should establish |
|---|---|
| Management-system certificate | Whether the correct entity, site, and activity fall within a currently valid scope |
| Food-contact declaration | Whether the selected material meets applicable rules under the intended food, temperature, and contact-time conditions |
| RoHS documentation | Whether substance-restriction evidence is relevant to the electrical or electronic product application |
| CE marking | Whether the specific product falls under legislation that actually requires the marking |
CE marking is mandatory only for products covered by applicable harmonized EU rules. The European Commission states that it must not be used where no relevant requirement exists. A generic "CE-certified PETG sheet" claim therefore needs careful examination.
RoHS concerns restricted substances in electrical and electronic equipment. It is not a universal environmental certification for all plastic sheets.
For food-contact plastics, Regulation (EU) No 10/2011 addresses composition, migration limits, and declarations, alongside the broader food-contact framework and good-manufacturing-practice requirements. Consult the current applicable text and intended-use conditions.
A clear sample demonstrates appearance; it does not by itself establish the polymer grade or production consistency.
Reduce the risk by linking the approved sample to a grade designation, lot number, technical data sheet, and purchase specification. For critical applications, agree on independent identification or performance testing before ordering.
Two offers described as "2 mm PETG" may have different permitted thickness variation and inspection methods.
Require a measurement plan covering multiple points across the sheet, agreed instruments, and acceptance limits. Evaluate usable-part yield rather than price per nominal square meter alone.
A small flat sample may not represent the forming behavior, optical uniformity, or packing condition of a full production sheet.
Use a staged approval process:
1. Review the technical documents.
2. Inspect a material sample.
3. Trial representative full-size sheets.
4. Form, print, bond, or machine under production conditions.
5. Approve a controlled pilot lot.
6. Release repeat production against the approved specification.
"Recycled" can describe different material streams. NUDEC's published PETG RC statement, for example, specifically concerns ground material from its own manufacturing.
Ask suppliers to define the feedstock category, percentage basis, traceability method, and relevance to the selected application.
Include film type, removal conditions, acceptable residue, scratch criteria, and the point at which surface inspection takes place in the sample plan.
This is a recommended contract control: it prevents the supplier and buyer from assessing surface quality under different conditions.
A less obvious sourcing risk is approving the polymer name while leaving the rest of the material construction uncontrolled.
For example, NUDEC's PETG range includes different surface, UV, and recycled-content options. Those distinctions demonstrate why "same polymer" does not necessarily mean "same approved specification."
A useful purchasing clause is:
- No change to the approved resin grade, recycled-content specification, sheet construction, UV package, protective film, or manufacturing site may be introduced without written buyer approval and agreed revalidation.
Treat this as a proposed procurement safeguard, not a universal industry standard.
The practical lesson is to approve a defined material system, not just the word "PETG." If substitutions remain permissible, specify which changes require a new forming trial, optical inspection, or compliance review.
Ask the supplier to identify who extrudes the sheet, applies protective film, performs conversion, inspects the order, and issues the commercial documents.
For a remote assessment, request a live walkthrough tied to the quoted product and inspection process. A manufacturer and a distributor can both be suitable partners; undisclosed responsibility is the larger concern.
Plant-wide capacity is less useful than available capacity for the required grade, thickness, and delivery window.
Request:
- Available stock allocated to the order.
- Production-slot confirmation where relevant.
- Sample and approval milestones.
- Expected output for the proposed run.
- Contingency arrangements for rejected material.
- Dispatch commitments and inspection timing.
For Gokai, its stated 10 production lines should remain background information until PETG-specific arrangements are confirmed.
Use the same commercial basis when comparing Spain-based supply with imports from China.
Include:
- Sheet and conversion charges.
- Tooling and sample costs.
- Packing and inland transport.
- International freight and insurance.
- Customs clearance and applicable duties.
- Inspection costs.
- Inventory carrying cost.
- Expected scrap and rejected-part cost.
Have the customs broker confirm tariff classification and applicable treatment from the actual material description and shipment details; do not rely on a broad plastics trade category as a PETG-specific answer.
Require an agreed packing drawing or description covering pallet dimensions, sheet support, edge protection, stacking limits, labels, and unloading requirements.
Gokai's company profile lists corner guards, export wooden pallets, and cartons among its packing approaches. The buyer should still approve the configuration for the actual PETG order.
NUDEC offers a documented Spanish PETG manufacturing history. Polimer Tecnic and IRPEN provide broader plastics portfolios and supply networks. Plastic Express emphasizes custom-size materials, while Traid Villarroya adds an engineering-plastics sourcing option in Zaragoza.
Shanghai Gokai provides a China-based alternative for buyers evaluating customized PETG supply, processing support, and international OEM coordination. Its suitability should be established through material documentation, representative samples, project-specific MOQ confirmation, and a complete landed-cost comparison.
To request a comparable quotation from Gokai or any shortlisted supplier, submit the required grade, thickness tolerance, dimensions, annual demand, order quantity, drawings, compliance requirements, and destination. Request a sample plan and written confirmation of manufacturing responsibility before releasing the first production order.
Request the complete certificate, including the legal entity, covered sites, standard, scope, certificate number, issuing body, and expiry date.
Then verify its live status through the issuing certification body and, where applicable, IAF CertSearch. The database supports validation of accredited management-system certifications, and its status categories include active, suspended, withdrawn, and expired.
If the search does not produce a matching record, seek clarification directly from the issuing body. Do not rely solely on a supplier's website logo.
Start with contractual identification: approved grade, manufacturer, lot number, data sheet, and retained reference sample.
If material identity is critical, ask an independent polymer laboratory to define a suitable identification and comparison program. Do not rely only on visual clarity or density. PETG and APET have related chemistry but different crystallization and processing behavior, making documented grade control important.
Keep retained samples from both the approved trial and delivered production lots so any dispute can be investigated against the same reference.
No. A food-contact declaration addresses a different intended use from a validated medical-packaging application.
EU food-contact rules concern matters such as authorized composition, migration, and conditions of food contact. Eastman's medical-packaging discussion separately examines PETG performance in sterile-barrier rigid packaging. Neither supports treating a general food-contact claim as complete medical-packaging qualification.
Define the medical application, processing conditions, and validation responsibilities before selecting the grade.
The polymer name alone does not adequately control that change.
Specify whether recycled content is permitted, how it is defined, and what reapproval is required. NUDEC's PETG RC offering illustrates that a PETG product can incorporate manufacturing regrind while remaining identified as PETG.
For demanding applications, require evidence supporting the particular composition and use—not just a statement that the material is "still PETG."
Separate the project into material supply and downstream customization.
First ask whether stocked PETG can meet the functional requirement. Then quote cutting, printing, drilling, forming, labeling, and packing separately. A stock-sheet conversion route may be more suitable than a dedicated extrusion run.
Gokai publishes PETG customization and processing options, while Plastic Express emphasizes material supplied to custom dimensions. Neither statement establishes a universal low MOQ, so obtain written quantities and charges for the exact specification.
