Jining Shuangdie Composite Materials Co., Ltd.
Mon – Sat 08:00 – 18:00 (GMT+8) sales@jiningdf.com 0537-3179955 中文

Quality Assurance

Every batch, fully traceable

From raw material intake to finished goods release, our quality control and traceability system covers the entire process — so your production yield stays predictable.

Quality Policy

Consistent quality that supports your mass production

Batch-to-batch consistency directly affects your production yield and the reputation of your finished product. Consistency is the core objective of our quality management.


Incoming material control

Main raw materials come from stable suppliers and are only released to production after passing incoming inspection, with batch records retained.

In-process inspection

Inspection checkpoints are set at casting, lamination and slitting, with key process parameters recorded in real time.

Finished goods release

Thickness, gram weight, tensile strength and peel strength are tested batch by batch before release.

Sample retention

A sample of every batch is retained, so raw materials, process data and test results can be traced quickly if an issue appears.

Compliance support

RoHS and REACH test reports and compliance statements can be provided for your target market.

Fast response

Quality feedback is investigated immediately, with a corrective action plan and improvement measures.


Routine Tests

We describe our products with data

The following are our routine test items. Final specifications are subject to the technical agreement confirmed by both parties.


Test item Typical range / note
Thickness 0.015 – 3.0 mm, tolerance controlled to your requirement
Width 10 – 1600 mm, with stable slitting accuracy
Gram weight Determined by specification and formulation, with controlled batch variation
Tensile strength Depends on product type and thickness; measured data available
Elongation at break Depends on product type; soft grades can reach ≥450%
Peel strength A key control item for laminated products, confirmed against your process
Water resistance Waterproof breathable grades can reach ≥10000 mmH₂O
MVTR Adjustable to your requirement, typically 3000–8000 g/m²·24h
Cold resistance Low-temperature grades pass a -30℃ flex test
Environmental indicators Comply with the relevant RoHS and REACH limits

Documents

Documentation we can provide

If you need any of the documents below, tell us the purpose through the inquiry form or by email and we will send them promptly.


  • Technical Data Sheet (TDS)
  • Material Safety Data Sheet (MSDS)
  • Batch test report
  • ISO9001 quality management certificate
  • RoHS / REACH test reports
  • Sample test feedback form


Need a test report or technical documents?

Tell us the product model and application and we will send the matching document version.


Need TPU film samples or a technical proposal?

Tell us the thickness, width, hardness and application, and our engineering team will come back within 24 hours with a recommendation and quotation.

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