Multiply Industrial Co., Ltd. has been in the business since 1979. As a manufacturer for all filtration parts, we have our dedicated focus on quality perfection while constantly improving product designs. Our more than 36 years of experience in the business has allowed us to always meet or exceed customer satisfaction while remaining price competitive for you. We are a manufacturer of water filtration system, parts and assembilies, including 5 and 6 stages RO system, fiter housings, filter cartridges(carbon, sediment) membrane(RO and UF), tanks, connectors and etc.