主营产品：Road engineering, construction engineering, communication pipelines, drilling engineering (excluding mine exploration) construction, fire protection facility installation and construction, decoration design and construction, landscaping engineering design and construction, engineering design consulting; traffic engineering facilities, building materials, steel, Sales of wood, cement, hardware accessories, and road maintenance materials; production, processing, and sales of asphalt (cement) concrete, (color) asphalt cold patching materials, asphalt sand, joint tapes, and joint grouting adhesives; advertising design and agency release, and machinery and equipment leasing ; Freight forwarding, logistics and distribution; general freight. (Projects that require approval according to law can only carry out business activities after approval from relevant departments).
主营产品：Flavors and fragrances, steroid series product raw materials, food additive intermediates, collagen, fine chemicals, pharmaceutical intermediates and technical consulting, development, production and sales, import and export trade. (If the above-mentioned business projects are subject to national laws and regulations and require approval, they can only be approved after approval.
主营产品：Industrial investment, research and development, and sales; other processed products, cleaning supplies, canned lubricants, electronic products, hardware products, rubber products, general machinery and equipment, packaging materials products, daily necessities, and handicrafts (projects approved in accordance with the law must be approved by relevant departments) Business activities can be carried out.
主营产品：Plastic materials, chemical products and raw materials, synthetic rubber and latex, flame retardants, catalysts, metal materials, mechanical equipment and accessories, environmentally friendly glue raw materials; import and export of goods.
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DB5013 high temperat
