mainly manages the domestic and foreign purchasing proxy, the cookware, the tea set, the building materials, the hardware, various types clothing, agricultural product and so on.

Executing Standard of product 
lndex State Standard
GB-6009-92 
Sodium sulphate Na2SO4 (%) ≥99.20 
(wafer-indissoluble maffer) (%) ≤0.05 
Ca+Mg (%) ≤0.10 
Chloride C1 (%) ≤0.10
Fe (%) ≤0.002 
Water (%) ≤0.05 
moisture content(%) ≤0.02
whiteness ≥ 88.5
PH   6-8