BeiJing TWT International Environmental-Protection techonlogy Co.,Ltd is a high-tech international enterprise congregating all the fire-fighting products in researching&development, production...

Li Cha Town, Jiaozhou City Qingdao Qingdao, Shandong

...

Acid copper plating brightener additive series of refined nickel bright nickel-depth low-foam wetting agent refined nickel-nickel-slot acid copper impurity impurity additive agent pre-treatment series...