A comprehensive guide to understanding and meeting ZDHC Manufacturing Restricted Substances List requirements.
For the full article, downloads or a conversation about how this applies to your own process, talk to our application team.

Specialty chemical solutions across water treatment, oilfield operations, and construction — backed by 30+ years of R&D.
View all productsSpecialized additives for concrete and mortar applications, enhancing strength, durability, and workability in modern construction projects.
Learn MoreNSF/ANSI 60 certified coagulants for potable water treatment, providing superior turbidity and color removal across a wide pH range.
Learn MoreBreak stubborn O/W emulsions from produced water, tank bottoms and machining shops — down to <30 ppm OIW.
Learn MoreDryer cakes, clearer filtrate, lower disposal tonnage — charge-matched to your press.
Learn MoreReactive, disperse and sulfur dyes neutralized at the source — before discharge standards bite.
Learn More
A comprehensive guide to understanding and meeting ZDHC Manufacturing Restricted Substances List requirements.
A comprehensive guide to understanding and meeting ZDHC Manufacturing Restricted Substances List requirements.
For the full article, downloads or a conversation about how this applies to your own process, talk to our application team.
Runs our Shanghai laboratory, covering polymer synthesis, QC analytics and ZDHC / NSF compliance testing.