TMR Feed Mixer Blade factory Our History Nanjing Heshen Precision Machinery Co., Ltd. is an enterprise with more than 10 years of production experience. Over the past ten years, Heshen Machinery has undergone several stages of development, and its production capacity, product development ability, and comprehensive ability have been greatly improved. Our Factory Nanjing Heshen Precision Machinery Co., Ltd. covers an area of 5,000 square meters, of which 4,500 square meters are used for the factory. The company currently has a staff skill training center with nearly 100 sets of various processing and testing equipment.