Skid-mounted fueling units, fire-retardant materials, metal containers, steel structures, truss systems, and new building materials, along with general contracting qualifications in construction engineering, petrochemical engineering construction, specialized steel structure engineering contracting, architectural decoration engineering contracting, mechanical and electrical engineering construction general contracting, anti-corrosion, waterproofing, and thermal insulation engineering contracting, foundation engineering contracting, ancient architecture contracting, and tank special facility cleaning. Also holds production licenses for hazardous chemicals, fire-retardant materials, fire-retardant skid-mounted fueling units, and storage steel tanks, along with relevant certificates and inspection reports.