Tianjin Longlong Metal Products Factory was built in 1991. located in Tianjin Beichen district (Its about 65 kilometers away from Tianjin Seaport and about 26 kilometers away from Tianjin Airport).That is a collection of scientific research, industry, trade as one of the well-known enterprise.We professional produce kinds of steel products and roll forming machines, have powerful technical force and advanced experience in production management. Through the ISO9001:2000 national quality certification in 2003 (now ISO9001:2015) and strictly in accordance with the standard implementation.We have been developing for 29 years with zero return and established a professional honest integrated service.We will persist in Abide contract, Keep promise, Customer first, Enjoying equality and mutual benefit. sincerely invite friends all over the world to work together and develop our ambitious exhibition.