Skid-mounted fueling units, fire-retardant materials, metal containers, steel structures, trusses, and new building materials, etc. With qualifications for general contracting in construction projects, general contracting in petrochemical engineering construction, special contracting in steel structure engineering, special contracting in architectural decoration engineering, general contracting in electromechanical engineering construction, special contracting in anti-corrosion, waterproofing, and thermal insulation engineering, special contracting in foundation engineering, special contracting in ancient architecture, and special cleaning of storage tank facilities. Possesses production licenses for hazardous chemicals, fire-retardant materials, fire-retardant skid-mounted fueling units, and steel tanks for storage, along with relevant inspection reports.