About Us
Your Authorized OEM Partner for OVAY RO Membranes
Bridging certified Chinese manufacturing with American brand quality standards.
Who We Are
Built to Empower US Water Brands
Shenzhen Seven Pillars Environmental Protection Co., Ltd. is the authorized OEM/ODM partner of OVAY (Hunan Ovay Technology Co., Ltd.) — an NSF/ANSI 58 & 61 certified manufacturer with NSF certification since 2017 in global RO membrane markets.
We help water purifier manufacturers, private-label brands, and OEM buyers across the United States source authentic OVAY membranes with full customization support — bridging the gap between certified Chinese manufacturing and American brand quality standards.
Our Values
Why US Brands Choose Seven Pillars
Authorized Source
Direct authorization from Hunan Ovay Technology — no middlemen, no counterfeits. Every shipment is traceable to the NSF-certified factory.
US Market Focus
We exclusively serve US water brand manufacturers and retailers — understanding NSF compliance, retail packaging standards, and US logistics.
Technical Depth
From residential RO to semiconductor UPW — our engineering team supports product selection, compliance docs, and OEM customization end-to-end.
2017
NSF Certified Since
30+
Countries Served
5
Product Series
24/7
Tech Support
Ready to Partner with Seven Pillars?
Let’s discuss how OVAY RO membranes can power your next product line.