Wholesale Wifi Thermostat for Heat Pump with Auxiliary Heat Our History In 2009 We established the first our own production line. In 2011, Hysen opened an online website to promote our products and let more customers know us. In 2012, Our products passed CE certification, and we registered the first China brand CN-HYSEN. In 2013 Our products are trusted by more customers in overseas markets such as Asia and South Africa. In 2014, We became to the thermostat industry top 10. In 2015, Another brand Hysen was registered. From 2016 to now, We are becoming a better smart home manufacturer. Our Factory Xiamen Hysen Control Technology Co., Ltd. is a well established manufacturer which located in the Xiamen, Fujian. We are the manufacturer of thermostats since 2008, specialised in designing, developing, and producing kinds of thermostats, built on the principles of making quality products and providing reliable service. Our Team HYSEN has a group team,and can arrange specific roles according to their characteristics. The RD team is good at software and hardware design, with rich experience in smart thermostat production. The quality control team is good at checking the production process from all aspects, so that our products are under management and conform to ISO standards. The after sales team helps customers solve problems when using our products, and the professional sales team plays a role in delivering our products to every customer. The logistics group is responsible for the packing and delivery of goods. Our Product Heating series, Air conditioning series, Color screen, Temperature control valve. Product Application Underfloor heating system, boiler heating, HVAC system, fan coil unit system. Our Certificate ISO9001, CE, RoHS, FCC, UKCAWholesale Wifi Thermostat for Heat Pump with Auxiliary Heat website:http://www.hysencontrol.com/