The registration address of ishikoyama zhang technological company ltd. Is located at the 8th street 9th street of yingjiang street in shijiang city, hebei province. The registration authority is the market supervision authority of the zhou jia zhou district, represented by a legal person, and operates within the scope of the energy conservation technology promotion service. Technical development of energy-efficient products, electronics, mechanical equipment; installation and sale of mechanical equipment and accessories, drilling rigs and accessories, mud pumps, excavation equipment and accessories; sale of railway equipment and accessories, environmental equipment, engineering machinery equipment and accessories, construction machinery equipment, electrical appliances and instrument instruments; installation of coal mine machinery equipment; import and export operations of various types of goods and technologies in self-employed and proxy countries, except those restricted or prohibited by the state. (projects subject to legal approval and subject to the approval of the relevant authorities before operating)**