Our company was established in Shanghai in 1999,invested by Hongkong Chanitex International Group Co.,Ltd. we are an exclusively owned enterprise by the Group. As the largest RO system manufacturer in Chinese mainland, we have a 30,000 square meters new workshop, and ourselves manufacture all the spare parts. The products we have includes: household RO system, Commercial RO systems, and other variety of models. All of my products are much competitive, for example, 50GPD standard RO system only cost you 50USD with one-year quality guarantee. For more information, please log on our website: our company have strong human power on research and development, complete technical professionals, advanced testing equipments . our products have gained the certification of ISO9001:2000 quality systems and CE certification.meanwhile we are doing the certification of NSF. We are very pleased to build up long standing cooperation relationships with your company, we also welcome OEM. As soon as receiving your detailed inquiry, we will be glad to reply to you right away and we can also provide samples of the model that you are interested in. Thank you for your attention again and waiting for your further reply.