Chongqing Advanced Technology Company Limited Supply High Quality Flame Test Equipment,Petroleum Products Test Equipment,Electrical Test Equipment and Laboratory Instruments from China Inspection goods before delivery. Reply in 24 hours for any inquiry or after-sale problem. 1 Year warranty for all products. 35 years manufacturer of oil test equipment. 27 years manufacturer of electrical test instrument. 10 years manufacturer of fire rating test system. Chongqing Advanced Technology Comp..