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Quality Assurance

Tested, Certified and Documented — Not Just Claimed

ISO 9001 certified production, CE marking to EN 14041, SGS testing to EN 15534-1 — and the actual measured numbers from our test reports, published for you to check before you order.

ISO 9001 certifiedGB/T 19001-2008 / ISO 9001:2008
CE markedEN 14041:2004/AC:2006
10,000 t / yearProduction capacity
In-house labBatch testing before shipment
Certification

Third-Party Certified Quality System

Our quality system, factory production control and product performance are verified by independent bodies — not self-declared. Copies of all certificates are available on request.

ISO
9001

ISO 9001 Quality Management

A certified quality management system covering the production and service of wood-plastic composites and WPC window frames.

Issued by DAS Certification (member of SN Registrars) to GB/T 19001-2008 / ISO 9001:2008.
Certificate no. QJ514160834.
CE

CE Certificate of Compliance

Declaration of conformity under the EU Construction Products Regulation for wood plastic composite flooring.

Issued by ISET s.r.l. with reference to Regulation (EU) No 305/2011 and harmonised standard EN 14041:2004/AC:2006.
SGS

SGS Product Testing

Independent laboratory testing of dimensions, bending strength, slip resistance and formaldehyde emission on production samples.

SGS test report SHIN220601702CCM — tested to EN 15534-1:2014, EN 13893:2002 and EN 717-1:2004.
Measured performance

Test Results — The Numbers Behind the Board

These are the actual results recorded in our third-party test reports, shown against the specification they were measured against. No cherry-picking: every line is from the report.

Source: China National Center for Test of Chemical Building Materials, report BETC-HJ-2021-P-00967 (GB/T 24508-2009), tested 10 May 2021; SGS report SHIN220601702CCM, tested 27 June 2022.
Test item Standard Requirement Measured result Status
Bending failure load GB/T 24508-2009 ≥ 2,500 N 3,636 N Pass
Freeze-thaw bending retention GB/T 24508-2009 ≥ 80 % 81 % Pass
Density GB/T 24508-2009 ≥ 0.85 g/cm³ 0.95 g/cm³ Pass
Water absorption GB/T 24508-2009 ≤ 3.0 % 1.2 % Pass
Size change after water absorption (length) GB/T 24508-2009 ≤ 0.3 % 0.1 % Pass
Surface wear resistance GB/T 24508-2009 ≤ 0.15 g/100r 0.08 g/100r Pass
Colour fastness (grey card) GB/T 24508-2009 ≥ grade 4 Grade 4 Pass
Burning performance — critical heat flux GB/T 24508-2009 ≥ 8.0 kW/m² 8.3 kW/m² Pass
Slip resistance EN 13893:2002 — Class DS, μ = 0.26 Tested
Formaldehyde emission EN 717-1:2004 — Not detected (ND) Tested

Results shown are for the tested model 166×20 mm in the indicated reports. Test data for specific models, colours and thicknesses is available on request.

Documentation

Certificates & Test Reports

Every document below is a real certificate held by our factory. Click any thumbnail to view it at full size — we are happy to send originals to distributors and project buyers.

Cover page of test report BETC-HJ-2021-P-00967 issued by the China National Center for Test of Chemical Building Materials
Report coverChina National Center for Test of Chemical Building Materials
Test report page 1 showing mechanical and physical test items to GB/T 24508-2009
GB/T 24508 — page 1Bending, density, water absorption, freeze-thaw, wear
Test report page 3 showing colour fastness and burning performance results
GB/T 24508 — page 3Colour fastness and burning performance
SGS test report SHIN220601702CCM for WPC decking dimensions and bending strength
SGS test reportEN 15534-1 · EN 13893 · EN 717-1
ISO 9001 quality management system certificate issued by DAS Certification
ISO 9001 certificateQuality management system approval — DAS
CE certificate of compliance to EN 14041 issued by ISET for WPC flooring
CE certificateEN 14041:2004/AC:2006 — ISET s.r.l.
Additional certification document for SENYU WPC products
Supporting certificationAdditional conformity documentation
Need the full set?Ask our team for complete, stamped copies for your tender or customs file. Contact Us →
Inside the factory

Where the Quality Is Actually Made

Extrusion lines, raw-material handling and laboratory testing — the equipment that turns recycled polymer and wood flour into a board that holds its shape for decades.

Twin-screw extrusion line with material hoppers producing WPC decking profiles
Twin-screw extrusion line · profile forming
Extrusion line with feeding system and cooling section in the WPC workshop
Feeding & cooling section
Pneumatic conveying pipes and material silos in the raw material area
Raw material conveying
Material storage silos with dust collection ducting in the factory
Silos & dust extraction
WPC production workshop with mixing and conveying equipment and an operator
Production workshop · 10,000 m²
Process control

Five Checkpoints Before a Board Leaves the Factory

Quality is controlled at each stage, not inspected at the end. A batch that fails any checkpoint is held, not shipped.

Incoming materials

Wood flour moisture, polymer grade and additive batches checked against specification before acceptance.

Compounding

Formulation weighed to recipe, then compounded and pelletised with controlled temperature and mixing time.

Extrusion

Line speed, die temperature and cooling profile monitored continuously; dimensions checked during the run.

Laboratory testing

Samples tested for bending load, density, water absorption and colour before the batch is released.

Packing & traceability

Boards packed with batch codes so any claim can be traced back to its production run and test record.

FAQ

Certification & Testing Questions

For warranty terms, see the warranty information page. For installation and care, see our technical guides.

Is SENYU WPC decking CE certified?
Yes. Our wood plastic composite flooring holds a CE Certificate of Compliance issued by ISET s.r.l. with reference to the EU Construction Products Regulation 305/2011 and the harmonised standard EN 14041:2004/AC:2006.
Which standards are your boards tested to?
Boards are tested to GB/T 24508-2009 (wood-plastic composite flooring) by the China National Center for Test of Chemical Building Materials, and to EN 15534-1:2014, EN 13893:2002 and EN 717-1:2004 by SGS.
What bending load does your decking achieve?
Test report BETC-HJ-2021-P-00967 records a bending failure load of 3,636 N against a specification of 2,500 N minimum, and a bending failure load retention of 81% after freeze-thaw cycling against a requirement of 80% minimum.
Is your factory ISO 9001 certified?
Yes. Our quality management system is certified to GB/T 19001-2008 / ISO 9001:2008 by DAS Certification for the production and service of wood-plastic composites and WPC window frames.
Can I receive the full test reports before ordering?
Yes. Full test reports and certificates can be shared with distributors and project buyers on request. Contact our sales team with your company details and the product model you are evaluating.
Public park platform built with WPC composite decking and railing

Need Test Reports for Your Project?

Tell us the product model and destination market — we will send the matching test reports, certificates and declarations for your tender, customs or distributor file.

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Contact Us

  Industrial Concentration Zone, Yangshou Town, Yangzhou City,Jiangsu Province, China
  +86-18752749508
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