Qingdao Haiwan Chemical Co.,ltd
+8615380400285 sales2@boxa-chem.com

Certification Certification

Our commitment to excellence through internationally recognized standards

Qingdao Haiwan Chemical Co.,ltd
Quality Standards

We adopt internationally recognized quality standards for Ethylene Route PVC, Liquid Caustic Soda, Styrene Monomer and Polystyrene. All raw materials undergo systematic index testing to match global industrial procurement requirements. We align specifications with regional import norms, continuously benchmark industrial standards, and strictly eliminate substandard goods to deliver reliable chemical materials to worldwide manufacturers.

Qingdao Haiwan Chemical Co.,ltd
Quality Assurance Process
Our full-cycle quality assurance process covers raw material sourcing, pre-shipment inspection, loading supervision and after-delivery tracking. Every batch of PVC, polystyrene, liquid caustic soda and styrene monomer will be sampled and tested. We record all test data completely, trace product quality throughout the supply chain and promptly handle any quality feedback from overseas clients.

Quality Metrics

Key performance indicators demonstrating our commitment to excellence

99.8%
Product Quality Rate
100%
Compliance Rate
99.5%
On-Time Delivery
0
Major Incidents