Shanghai DM Machinery Co., Ltd is a comprehensive manufacturing with diverse product ranges. DM engaged in trailer accessories, manufacturing as OEM for various trailer parts, which now endows DM with the reputation as Foremost Towing Accessories manufacturer in China. Dedication to new product development the quality and innovation enjoys wide towing product series including Trailer jack, Ball Mount, Coupler, Locks, Weight Distributing Hitch, Winch, Hitch Ball , etc. We are confident our quality products with competitive price can ensure our customers more benefit and safe towing experience.