Tongrun Tolin (China well-known trademark, high-tech enterprise, listed company, leading enterprise in jack industry, Changshu Tongrun Auto Parts Co., Ltd.); Energepan pike (1910 started in the United States, is the world's leading supplier of high-voltage hydraulic tools and equipment, a large multinational industrial group, and Practical Power (China) Industrial Co., Ltd.); Steel City (founded in 1972, a professional lifting tool enterprise designated by the Ministry of Machinery Industry, a backbone enterprise in the domestic jack industry, and Shanghai Baoshan Jack General Factory Co., Ltd.); Haitong FHM( 1987, an export-oriented production enterprise with import and export rights, the backbone enterprise of hydraulic jack industry, Fenghua South Machinery Manufacturing Co., Ltd.); Baoshan (established in 1958, a professional enterprise dedicated to R&D and hydraulic tools manufacturing, a leading domestic enterprise in hydraulic tools, Shanghai Baoshan hydraulic tools Co., Ltd.); Li Shen (founded in 1947, one of the earliest hydraulic jack manufacturers in China, the leading brand and technology enterprise in the separated jack industry, Shanghai Jack Factory); Hailing (Jiangsu famous trademark, Jiangsu famous brand, top ten brands in hydraulic jack industry, Jiangsu private technology enterprise, Taizhou Hailing Hydraulic Machinery Co., Ltd.); Golden monkey (an enterprise dedicated to the research and development of light and small lifting machinery and engineering structural parts, the national standard drafting unit of rack jack, Hangzhou Jinchang Lifting Machinery Co., Ltd.); Tianheng (Zhejiang high-tech enterprise, leading hydraulic jack manufacturing enterprise, provincial enterprise technology center, Zhejiang famous enterprise, Hangzhou Tianheng Machinery Co., Ltd.); Kang Wang Konwa (an enterprise specializing in R&D and auto parts production, a leading enterprise in jack industry, a well-known jack brand, Zhejiang Kang Wang Industry and Trade Co., Ltd.) (for reference only)