Company: Dawhua Advanced Chemicals (Under license of Dweltt GMBH Germany)

Country Code: DE

Certification Area: ISO 9001:2015

Scope: Chemical raw materials - Diatomaceous earth - Mineral materials.

Certification No: QMS29251077

Audit No: GQS/MD/ER/00932

Original Date: 29/10/2025

Current Date: 29/10/2025

Expiry Date: 29/10/2026