Shenzhen, China — August 21, 2026 — Shenzhen Zhihe New Materials Co., Ltd. today announced the expansion of its in-house quality control laboratory, strengthening end-to-end testing capabilities for flexible packaging destined for international markets. The upgraded facility consolidates physical, barrier, and seal-integrity testing under one roof, giving global buyers verifiable quality data at every stage of the production cycle.
The expanded laboratory centralizes the testing disciplines that export buyers most frequently request, eliminating the lead-time cost of external laboratory outsourcing:
- Barrier performance testing: Oxygen transmission rate (OTR) per ASTM D3985 and water vapor transmission rate (WVTR) per ASTM F1249, covering the full barrier range from standard PE laminates to aluminum foil and oxide-coated structures
- Seal and physical testing: Seal strength per ASTM F88, peel force measurement for lidding films, and puncture resistance validation for frozen food and pet food structures
- Mechanical durability: Gelbo flex testing per ASTM F392 to quantify flex-crack resistance of metallized and oxide-coated barrier layers — the test that reveals whether a barrier film will survive pouch forming and transport
- Leak detection: Vacuum-decay leak testing for spout pouches, zipper pouches, and lidding seals, supporting 100% inline inspection programs on production lines
Quality control at Zhihe is not a batch-release event — it is woven into the production schedule. Incoming raw materials are verified against certificate-of-analysis requirements before entering the production floor. In-process testing samples are drawn at defined intervals during printing, lamination, and pouch-making. Finished goods undergo final testing per the agreed quality plan, with documented test reports issued per batch for buyer records.
This workflow gives buyers three practical assurances: traceability from raw material lot to finished shipment, test data aligned with the internationally recognized ASTM standards that import regulators and retail audits expect, and early detection of process drift before it becomes a defective batch.
For buyers shipping into regulated markets, the laboratory's output directly supports compliance documentation. ASTM-standard barrier and seal data accompanies PPWR recyclability assessments for EU shipments, FDA 21 CFR and EU (EC) No. 1935/2004 food-contact documentation, and retailer audit responses that require evidence of finished-goods testing. Buyers can request test reports at specification stage, during production, or with final shipment documentation.
Zhihe Packaging accommodates buyer-specific quality programs, including custom sampling frequencies, additional test methods beyond standard scope, and hold-and-release protocols aligned with import market requirements. The laboratory team works with buyers to define acceptance criteria before production, ensuring that quality expectations are documented on both sides of the agreement rather than discovered at the inspection stage.
Shenzhen Zhihe New Materials Co., Ltd. is a B2B flexible packaging manufacturer serving brand owners and distributors in over 20 countries. For quality documentation, custom testing programs, or sample requests, contact our export team.
