How about jianhu county Hongda Valve Fittings Co., Ltd.?

Jianhu county Hongda Valve Fittings Co., Ltd. (hereinafter referred to as "the company") was established in 1998, and its headquarters and factory are located in jianhu county, Jiangsu Province, an important production base of China petroleum equipment industry. After more than 20 years of development, the company has become a professional manufacturer of petroleum machinery and construction machinery, a member of the first-class supply network of PetroChina, Sinopec and CNOOC Materials and Equipment Corporation, and a top 50 enterprise in China's petroleum and petrochemical equipment manufacturing industry. The company was recognized as a national high-tech enterprise, and the trademark "Lu 'an" was recognized as a well-known trademark in China. The company is a small giant of science and technology in Jiangsu Province, an outstanding private enterprise in Jiangsu Province, and an AAA quality credit enterprise in Jiangsu Province, and won the award. The registered capital of the company is 202.88 million yuan, covering an area of more than 200,000 square meters. The main products include casing heads, wellhead devices and Christmas trees, choke and kill manifolds, various high-pressure valves and comprehensive fracturing and gas testing services. The company has successively passed ISO-900 1 quality management system certification, ISO- 1400 1 environmental management system certification, ISO 18000 health, safety and environmental protection system certification, and ISO 100 12 measurement management system certification. Products from raw materials into the factory, to forgings, heat treatment, welding, nondestructive testing, mechanical processing, assembly, pressure testing, sandblasting, cleaning, drying, painting, and then packaging factory, the whole process of strict inspection and control, in line with traceability requirements. The company has its own testing center, a full set of testing equipment and personnel qualifications. The company has a strong R&D organization and team. The company is a pilot enterprise integrating informationization and industrialization in Jiangsu Province. It was recognized as a provincial-level technology center by Jiangsu Economic and Information Technology Commission and an oil and gas well control equipment engineering technology research center by Jiangsu Science and Technology Department. The company has established a complete computer network working platform to realize the information management of technology research and development and production organization, and realize the complete link between technical data and production instructions. The company participated in drafting the newly revised national standard "Wellhead Devices and Christmas Trees for Drilling and Production Equipment in Oil and Gas Industry" GB/T225 13-20 13 and the industry standard "Throttle and Kill Equipment for Drilling and Production Equipment in Oil and Gas Industry" SY/T5323-20 16. The company has a number of high-tech products in Jiangsu Province. More than 20 products such as uncoiling eccentric oil and gas production wellhead device, concentric tube water injection wellhead device, oil production wellhead device and integrated Christmas tree, fracturing wellhead device and Christmas tree, double-slip all-metal sealing integrated casing head, corrosion-resistant throttling and killing manifold have passed the production appraisal of new products in Jiangsu Province, and the fracturing wellhead device and Christmas tree have won the first place in Jiangsu Province. It has more than a number of national utility model patents and invention patents, such as "setting the sleeve pipe head", "unwinding the eccentric wellhead device for oil and gas production" and "erosion-resistant manifold four-way".