The registered address of zhang guanghua new materials technology co. Ltd. Is wang mau, dong wang town, zhuang economic development zone, hebei province. The registration body is the market supervision authority of the zhuidu district, represented by a legal person, and covers the development of new materials, technology extension services, and the sale and import and export of chemical products (excluding dangerous chemicals)* (project subject to approval by law, subject to the approval of the relevant authorities)