YUNDA FILTER has 12 patents for water filter cartridges.
YUNDA FILTER has got the authoritive NSF 53,N S F 4 2 and N S F 3 7 2 Certifications from W Q A. Please click the following link:
Or get on the web of WQA http://www.wqa.org, Search our company name TIANJIN JINGHAI YUNDA INDUSTRY AND TRADE CO., LTD
YUNDA FILTER has got NSF42, NSF372 Certifications from N S F and I A P M O.
We are the sole manufacturer who have got all the three authorative certifications of N S F, W Q A and I A P M O.