Zhengzhou Welcom Tech Co. Ltd.

Calcium Formate Sodium Nitrite Silica Gel Activated Carbon Coal Based Zhengzhou Activated Carbon Activated Carbon Wood Based 74% Flake Dihydrate Calcium Chloride Poly Aluminium Chloride High Grade Polyacrylamide Anionic 60% 56% Sodium Dichloroisocyanurate Dihydrate Granular Powder Tablets Aluminium Sulphate Sodium Dichloroisocyanurate 98% Min Water Treatment Chemicals Detergent Chemical Sodium Tripolyphosphate Titanium Dioxide