Located within the Xiaosha Economic and Technological Development Zone in Hangzhou, XX Purification System Co., Ltd. has consistently dedicated itself to the research, development, and sales of household pre-filters. The company possesses a professional team with extensive experience in R&D and manufacturing pre-filters for numerous renowned domestic and international enterprises. After a decade of development, in 2013, Haining Beishi Environmental Technology Co., Ltd.—a pre-filter R&D and manufacturing base with an annual production capacity of 1 million units, invested by Hangzhou Beishi—was formally established. Situated in the Lianhang Economic Development Zone of Haining City, adjacent to Hangzhou, this facility stands as China's most specialized base for pre-filter design, manufacturing, ODM, and OEM services. Europe is the birthplace of pre-filters, renowned for rational product design and consistent quality. Beishi Environmental leverages the strengths of European pre-filters while adapting to domestic water conditions and regional specifics. We spare no expense in investing significant human and material resources into innovation and refinement, sourcing global materials and utilizing state-of-the-art facilities. Through years of R&D and accumulated expertise, we have developed a representative series of high-quality European-style pre-filters. Our product inspection standards exceed NSF certification requirements, with every unit undergoing 100% real-water field testing to ensure reliability. Beishikang embraces an open approach, eager to collaborate with you in crafting China's premier pre-filters and jointly pioneering the innovative path for professional water purification brands.