Our company has obtained many patent certificates for water filter caps.
Release time:2019/07/24

Our company specializes in the production of filter caps for more than 30 years (former Tongzhou No. 3 Plastic Factory), which is the leader of the domestic industry. The quality of water caps upholds the highest level in China. The column water caps have been developed by experts for a long time to fill the gap in China and obtained the national invention patent certificate. The certificate number is 1203445, and the patent number is ZL 2011 1 0440. Five hundred and eighty-one point seven