Hebei Runyi Fireproof Materials Co., Ltd. is registered in Houzhang Village, Beiwei Town, Dacheng County, Langfang City, Hebei Province. The registration authority is the Market Supervision and Administration Bureau of Dacheng County, Langfang City, and the legal representative is Zhang Jiachuan. The business scope includes general projects: production and sales of fireproof sealing materials, coating manufacturing and sales (excluding hazardous chemicals), production and sales of refractory materials, manufacturing and sales of insulation and sound insulation materials, sales of valves and plugs, sales of glass fibers and products, sales of high-performance fibers and composite materials, sales of building waterproofing membrane products, sales of insulation materials, sales of sealing fillers, sales of anti-corrosion materials, sales of seals, sales of graphite and carbon products, sales of high-performance sealing materials, import and export of goods Building cleaning services (excluding projects that require approval according to law, independently conducting business activities that are not prohibited or restricted by laws and regulations); Licensed projects: various engineering construction activities, construction labor subcontracting (the above projects that require approval by law can only be carried out after approval by relevant departments, and specific business projects are subject to approval documents or licenses). (For projects that require approval by law, business activities can only be carried out after approval by relevant departments)