The DeLong Valve Manufacture Co., Ltd. in Meitan County Guizhou Province was established on May 17, 2013, with a registered fund of 7.47 million and a total investment of 30 million (CNY). It specializes in the production of internal combustion engine valves, and mainly manufacturing valves for automobiles, general-purpose gasoline engines, diesel engines, motorcycles, and agricultural machinery. The company is situated in Hongping Industrial Park Meitan County, Zunyi City, Guizhou Province, occupying a land area of over 10 MU (approximately 0.67 hectares) a total covered area of 4,000 square meters. It features office buildings and factory facilities with The premises include independent, well-equipped production workshops dedicated storage warehouses and along with fully appointed residential and administrative zones. DeLong currently employs 60 staffs. Its management team includes professionals with masters, bachelors and comprising 7 senior/mid-level technical personnel, 14 junior-level professionals. They have rich management experience, and the average tenure of core technical personnels in DeLong is close to or exceeds ten years. Other employees have many years of professional manufacturing experience in valves. DeLong has obtained 2 invention patents and 18 utility model patents. In December 2022, DeLong was certified as a "Healthy Enterprise of the Zunyi City” and  "High-Tech Enterprise of the Guizhou Province”. In October 2023, DeLong was awarded the certification of  "Commercial Vehicle Aftermarket Alliance Council Member Unit”. In 2024, DeLong was certificated as "IATF 16949 : 2016 Quality Management System Certification” in March, and “Small and Medium-Sized Enterprise of the Guizhou Province” in June. Moreover, DeLong had the “Enterprise Intellectual Property Compliance Management System Certification” in April 2026, following the standard of GB/T 29490-2023.

DeLong had over 60 advanced domestic automated valve production machines, established fully automated processing lines for internal combustion engine valves, and also maintained comprehensive inspection and testing equipments for 16 units. The company has an annual production capacity of 12 Million valves and an annual output value of 60 Million (CNY). Its products cover the internal combustion engine valve industry for domestic and oversea automobiles, general gasoline engines, diesel engines, motorcycles, and agricultural machinery. The company has signed sales contracts with numerous well-known domestic and global enterprises, including Chongqing Runtong, Fuchai, Huashidan, Quanjing Machinery, Niudai Power, Weimente, Aimengma, Jingong, Kaibao Power, Kaimier, Hongpan, Ruijie, Aerospace Bashan; Sichuan Lizhong; Henan Hangnei; Zhejiang Yuhuan Zhengqi; Anhui Xinqilian; Guangzhou Changling, Qianqian; Shanghai Doleway; MOTOCARE, SPRL in India, and SARLIPAB.H in Algeria. The company holds the right to engage in import and export trade, and its products have been sold to more than a dozen countries and regions in Asia, Africa, Europe, and the America.