Shandong Hongyu Precision Machinery. 

Shandong Hongyu Agricultural Machinery Co., Ltd. is a Chinese enterprise dedicated to the research, development, production, distribution, and after-sales service of components and integrated solutions for agricultural machinery. The company offers a diverse range of specialized control products, including separated control valve downforce systems and simple control valve no-feedback mechanisms. Its portfolio also features both separated oil and common oil type position and draft controls, as well as common oil type composite controls. Additionally, it supplies crucial hydraulic parts such as distributors and cylinders. Beyond its domestic operations in China, Shandong Hongyu maintains a significant global presence, exporting its products to nearly 30 countries and territories worldwide. The company's headquarters are located in Laizhou, China.