Ningbo HO water purification technology co., ltd is a leading manufacturer of high quality solid carbon block filter. We have a number of patents for producing sinter solid carbon block filter which helps a lot for maintaining the high quality and achieving mass production. Our raw materials are certified by NSF 61 and the final products are certified by NSF/ANSI42 issued by WQA. We have strict QC system for raw materials, ongoing production and the final product. We mainly supply the standard filter cartridge for water purifier and carbon filter for sports bottle while we are also specialized in custom carbon filters offering OEM service. The products can be with different performance and specification. Manufacturing Execution System was official on-line from 2022 year. It's a network system designed to facilitate manufactures for the product manufacturing with high quality, low cost and minimum lead time.With the industry leading performance, we create the most value for our clients and make efforts for supplying safe and healthy water for the people.HO lab started to operate from 2011 year, around four million RMB has been invested and more money is being putting into the lab to improve testing ability.HO lav can provide its customers extensive testing and development support. Mass production is supported by on-line quality inspection and process control methods. HO lab provide electronic dimensional analysis of finished product and perform routine tests such as raw material analysis, carbon block analysis, bacterial performance.