The registration address of apa is at no. 418 of the city of aquaculture, hebei province, and the registration authority is the city monitoring authority of the city of acacia, representing liang sea, which operates on general projects such as the manufacture of rubber products; the sale of rubber products; the manufacture of plastics; the sale of plastics; the manufacture of metal tools; the sale of metal products; and the manufacture of metal chains and other metal products。