The Changchun Hongji Automobile Machinery Co.,Ltd is situated in China north spring city-Changchun,and adjoining the FAW.Our company specialize in manufacturing the high-frequency welded pipe mill for car radiator and each kind of specification high-frequency electric resistance welded pipe.The products are mainly applied in the automobile radiator profession.At present，the company has certain ability of designing and processing.The scale is being expanded along with the increment of business.Our high-frequency welded pipe mill is designed and manufactured by the introduction and innovation of foreign advanced technology and technique,and it has been attained the most advanced technology level and automation level in the same field at home and abroad,the high-frequency welded pipe mills which were sold from our company are in good performance and praised by the users.