Longkou Chengfeng Zhiyuan Technology Co.,Ltd. is a company which devotes itself to research and sales in multiport valves and complete equipments for water treatment system. As a menber unit of China Boilter Water Treatment Association, our company accepts and authorizes multinomial PCT international patent, demestic patent for invention and utility model paten. Our products have proprietary intellectual property rights. Longkou Chengfeng Environmental Protection Equipment and Technology Co.,Ltd. and Longkou Haifeng Evnironment Project Co.,Ltd. are our authorized manufacturers who have secondary licence of boiler installation, renovation and maintainance: one-level licence of pressure vessel installation, pressure piping installation, GC2+GB1+GB2.1 licences, Di and D2 licence of pressure vessel manufacture. The non-negetive pressure feedwater equipment passes water-related hygiene attestation with aptitudes in fire-fighting equipment production and 3C identification of low-voltage apparatus control cabinet. All the products pass ISO9001:2008 quality system, ISO14001:2004 management system and GB/T28001:2011 environment qualification.