Shuangguan Environmental Technology Co., Ltd., a comprehensive company integrating R&D, production, and marketing, strictly adheres to GB/T4219.1—2008 and GB/T10002.1-2006 standards. The company specializes in the production of the "Shuangguan" brand UPVC chemical pipes, UPVC water supply pipes, and various valves and pipe fittings. Our product quality is reliable and covers a full range of specifications (φ20-φ500). Shuangguan Pipe was established on April 6, 2006. The founder, Mr. Tianshengzhong, has been engaged in the sales of UPVC and ABS pipes and valves since 1993 until 2006. He once served as the agent for Hongqi plastic products in Chongqing and has profound knowledge of the characteristics and applications of plastic pipes. Since 2006, he has been dedicated to researching and exploring the use of UPVC chemical pipes and UPVC water supply pipes under various industrial conditions. Based on user requirements such as the concentration, temperature, pressure, indoor, or outdoor environment, he provides reasonable suggestions and different solutions. He has participated in numerous on-site analysis meetings regarding UPVC pipe explosions and leaks, offering many customer-satisfactory solutions that have received wide recognition from professionals in the industry. Under the guiding spirit of "fearless of difficulties, keeping pace with the times, and gaining trust from users through quality," Shuangguan Pipe has steadily improved its product quality, moving from non-standard to enterprise standard and then to national standard. The thriving Shuangguan Environmental continues to regard obtaining national standards as a new starting point and a new journey. The internal quality assurance ensures that the product's surface finish and comfort are generally improved, making customers feel at ease both visually and when in use. Currently, our company is a member unit of the Chongqing Environmental Industry Chamber of Commerce, the Sichuan Surface Engineering Association, the Chengdu Surface Engineering Association, and the Chongqing Electronic Circuit Manufacturing Industry Association. We have established long-term cooperative relationships with renowned environmental and chemical enterprises such as Chongqing Environmental Investment Group Co., Ltd., Chongqing Jike Environmental Electroplating Park, Guizhou Jumei Environmental Surface Treatment Park, Chongqing Dazhu Intelligent Wheel Electroplating Park, Chongqing Dahan Electronics Technology Co., Ltd., Sichuan Haiming Electronics Technology Co., Ltd., Chongqing Qianren Machinery & Equipment Co., Ltd., Third Design Institute Environmental Research Office, Pansteel Group Chongqing Titanium Industry Co., Ltd., Chongqing Three Gorges Environmental Protection, Chongqing Gangli Environmental Protection, Hunan Jufan PCB Project, and other prominent environmental and chemical companies in Chongqing and surrounding provinces and cities. This has further increased our company's influence, credibility, and recognition within the industry. Our company will continue to uphold the philosophy of "rooted in Chongqing, serving the Southwest" and continuously improve service quality, providing customers with high-quality, cost-effective products directly from the manufacturer. Local production addresses the challenges of long transportation cycles and high freight costs for users.