Langfang Sanding Building Materials Co., Ltd. is registered in Xiajiatun 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 Han Chengxu. Its business scope includes the manufacturing and sales of insulation and sound insulation materials, fireproof sealing materials, coatings (excluding hazardous chemicals), plastic products, building waterproofing membrane products, rubber products, and lightweight building materials; Sales of new membrane materials (excluding hazardous chemicals), sales of chemical products (excluding licensed chemical products), sales of sealing fillers, retail of hardware products, and sales of insulation materials. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments)