CHANG ZHOU HOLLYSEN TECHNOLOGY TRADING CO.,LTD is an enterprise which focuses on auto ac compressors,car accessories,repair and clean tools. We have professional sales team, quality control team, after-sale service team, Research and develop team. We are located in Changzhou City, Jiangsu Province, which is only one hour from Shanghai. It makes us convenient to arrange cargo transportation to Shanghai port.Our cooperation factory has strong technical capability and Research and develop ability. They have impeccable intellectual property management certification system, that has passed the certification of I A T F 1 6 9 4 9 International Automobile Industry Quality Management System. At the same time, has applied for many accepted and authorized patents.