Certifications
Our Industry Certifications
Walchin is committed to the highest industry standards. We hold certifications ensuring quality, sustainability, and regulatory compliance.

ISO 9001:2015
Quality Management System Certification ensuring consistent product quality.

ISO 14001:2015
Environmental Management System Certification for sustainable operations.

NSF/ANSI 61
Certification for safe drinking water components and materials.

Invention Patent
Reverse osmosis membrane for fractional reverse osmosis treatment of treated liquid.

Invention Patent
Reverse osmosis membrane functional layer solution formula and coating process.

Invention Patent
Continuous coating device with controllable coating thickness for reverse osmosis membrane support layer.

Invention Patent
High performance reverse osmosis membrane and its manufacturing process.

Invention Patent
Reverse osmosis membrane coating and reverse osmosis membrane body suitable for strong acid solution.

Invention Patent
A reverse osmosis membrane device with multiple filter chambers.