Shanghai M4 Industrial has been specialized in auto accessories, auto spare parts & auto repair tools since 2001. Our products have been much appreciated by many famous worldwide customers for both excellent quality and competitive price.Our R&D engineers with rich experience can design and develop new products regularly which meet our customers specific requirements. Moreover, the quality of our products is fully controlled by our well-experienced QC auditors. They ensure all our products are free of defects and meet international standards. Our objective is to provide a wide range of high quality products with competitive price. We also share our manufacturing line with customers to co-develop new products for the worldwide market. Your great satisfaction in the trading will be guaranteed by us.