Tianjin Tsai Fan HVAC Technology Co, Ltd. Was founded in 2001. It is a small and medium-sized but fast growing scientific and technolog-ical innovation enterprise. Its main products include on off type electricball valve, electric actuator, miniaturer modu-lating valve, water leak alram controll system, and intelligent timer controlled valve etc. Valve size from 1/4''to 2''.The motorized valve has compact size with long life time, low noise, no leak and many other features. Tsai Fan motor-ized valve are widely used in air pump tank automatic drainage, automatic watering, water treatment, energy saving,industrial automation and other small equipment. Tsai Fan strived to excellent quality and stability to meet customer needs. Our products are exported to manycountries of the world, mainly in Europe & America, and won the customer' S trust and praise.