Intradin (Shanghai) Hardware Co., Ltd. has been serving the automotive, marine and outdoor industries for many years under a well-established trademark of TOWKING. We invest significant resources in building up our Towing Accessory line which covers a wide range of products including trailer jacks, ball mounts, couplers, winches and other accessories related to the towing and trailer business. We maintain high standards through OEM. SAE J684 standards are followed and tests are conducted in-house and by third-party labs in the USA. All TOWKING products offer one-year warranty assuring manufacture to be free of defects in material and workmanship. Safety is important to us. We have invested a significant amount of resources in getting one of the most comprehensive testing facilities and methods in the industry. The products under our TOWKING brand have undergone significant safety and quality check as per ISO9001 standards. Our US$2,000,000 Product Liability Insurance also confirms our commitment to you.Customer Commitment: TOWKING is committed to providing the highest quality products with highly competitive prices and prompt delivery to your door. All products are innovatively manufactured with custom packaging to fit your requirements.Thank you for visiting our website. Feel free to contact us for further information!