Langfang Dayuan Energy saving Technology Co., Ltd. is registered in Li Lingju Village, Guang'an Town, Dacheng County, Langfang City, Hebei Province. The registration authority is the Market Supervision Administration of Dacheng County, Langfang City, and the legal representative is Wang Ludong. The business scope includes general projects such as technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Production of fireproof sealing materials; Sales of fireproof sealing materials; Production of refractory materials; Sales of refractory materials; Manufacturing of insulation and soundproofing materials; Sales of insulation and soundproofing materials; Manufacturing of lightweight building materials; Sales of lightweight building materials; Manufacturing of sealing fillers; Sales of sealing fillers; Sealing component manufacturing; Sales of seals; Manufacturing of fiberglass and related products; Sales of fiberglass and related products; Manufacturing of non-metallic mineral products; Sales of non-metallic minerals and products; Manufacturing of plastic products; Sales of plastic products; Manufacturing of asbestos products; Sales of asbestos products; Manufacturing of cement products; Sales of cement products; Sales of coatings (excluding hazardous chemicals); Manufacturing of ecological environment materials; Sales of ecological environment materials; Manufacturing of glass fiber reinforced plastic products; Sales of glass fiber reinforced plastic products; Manufacturing of specialized chemical products (excluding hazardous chemicals); Sales of specialized chemical products (excluding hazardous chemicals); Manufacturing of daily chemical products; Sales of daily chemical products; Sales of chemical products (excluding licensed chemical products); Sales of high-performance fibers and composite materials; Manufacturing of new membrane materials; Sales of new membrane materials; Sales of new catalytic materials and additives; Sales of engineering plastics and synthetic resins; Sales of synthetic materials; Rubber product manufacturing; Sales of rubber products; Retail of hardware products; Sales of insulation materials; Sales of anti-corrosion materials; Import and export of goods; Technology import and export. (Except for projects that require approval according to law, business activities can be carried out independently based on the business license in accordance with the law) Licensed project: construction project construction; Construction labor subcontracting; Professional construction work. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments. The specific business projects shall be subject to the approval documents or licenses issued by the relevant departments.)