The registration address of the nanjing beizawa valves is located at no. 131, located in the nanjing municipality, and the registering authority is established in nanjing city, under the name of huang changhong, which operates in the areas of valves, pump production, assembly (in branches where production is limited and assembly is not registered); mechanical and electrical products, mechanical equipment, hardware heating, distribution of instrumentation tables; and valves, pump technical information services. (projects subject to legal approval may not operate without the approval of the relevant department)