[Geann - A professional manufacturer of Ceramic Valve Cartridges and Plumbing Valves. Ceramic disc valve cartridge, rough-in valve supply over 30 years. Auto assembly machine ceramic faucet cartridge manufacturing meeting international standards, NSF, IAPMO, WRAS, ACS, DVGW and WATERMARK. No-lead brass, EU brass. ISO 9001 and IECEx certifications obtained for your ceramic cartridge orders. 100% quality control on every ceramic faucet cartridge with tracing code. Ceramic disc valve cartridge, rough-in valve OEM / ODM precision parts manufacturing and supply.]