Since 2003, Nanjing songzi Commercial & Trade Co., Ltd. , has been successfully eliminating global buying issues from the minds of our clients & customers in North America, the European Union, the UAE, Australasia as well as many other countries in the foreign marketplace. we are very specialized in developing and designing thermoelectric cooler, in additional to this, we also deal with the parts of the thermoelectric cooler, such as power supply, cooling fan, heat sink, etc. Except ...