... air cooled heat exchangers products are widely used in petroleum, chemical, natural gas and metallurgy industries. For years, Our products were ... Company, and other metallurgical companies; Sinopec Shanghai Gaoqiao Petrochemical, JSPCC, Sinopec Zhenhai, Yanshan Petrochemical, Tianjin Petrochemical, Qilu Petrochemical, Sinopec Yangzi Petrochemical, and other Petrochemical ...