The registration address of hebei yiyong science and technology ltd. Is located in the northern part of the village of miyon, yuzhou city, hebei province, and covers the production and sale of building materials for soundproofing and concussion pads, auto parts, instrumentation instruments, industrial machinery equipment, aluminum paper products, plastics, electronics, office supplies, metals, glass products, chemical products (other than dangerous chemicals), water protection works, anti-corrosive temperature engineering designs and construction work。