... 4. LED dynamic color display screen, bright and visual5. Single tank control valve, no water discharge when regeneration6. Double operate timing mode ... (This operation carried out by professionals)It can external connect with high-pressure pump, solenoid valves. Main parameter1. Base: ... , RO system, Accessories(valve, distributor, tank head, etc.) We have 7 years OEM Experience, with ISO 9001:2000 of ...