ADDA is the main business product of Xiexi Motor Company in Taiwan. For heat dissipation (a small industrial fan), there are many names: heat dissipation fan, axial flow fan, industrial fan. Wait ADDA products are known as one of the three major brands in Taiwan. We have factories in mainland China (Taiwan's technology and equipment as well as raw materials). Direct production in mainland China. Explain it here. Because there are thousands of fan models. So they are all made to order. The construction of factories in the mainland will have an advantage in the delivery time. Generally, it can be shipped in two to three weeks. It can save two to three weeks compared with the general imported brands) so the price will be very advantageous