General Projects: Sales of specialized environmental protection equipment; Manufacturing of specialized environmental protection equipment; Installation services for public facilities of environmental health; Environmental protection consulting services; Water environmental pollution prevention and control services; Manufacturing of glass fiber reinforced plastic products; Sales of glass fiber reinforced plastic products; Manufacturing of glass fibers and products; Sales of glass fibers and products; Manufacturing of metal materials; Sales of metal materials; Mold manufacturing; Mold sales; Manufacturing of rubber products; Sales of rubber products; Manufacturing of plastic products; Sales of plastic products; Water environmental pollution prevention and control services; Manufacturing of non-metallic mineral products; Sales of non-metallic minerals and products; Manufacturing of synthetic fibers; Sales of synthetic fibers; Machining of mechanical parts and components; Sales of mechanical parts and components; Manufacturing of general equipment (excluding special equipment manufacturing); Manufacturing of general components; Repair of general equipment; Manufacturing of special equipment (excluding licensed professional equipment manufacturing). (Except as otherwise required by laws and regulations, the company operates independently and autonomously based on its business license.)