Toptech International established in 2008 which located in Chengdu, the Southwest of China. We have 8 years experience in field of electrical automatic products, including frequency inverter, soft starter; solar products including pure/modified sine wave inverter, solar controllers etc. We have established good business relationship with many famous domestic manufacturers and also supply products to numbers of well-known international companies. We can get most competitive price for you which even lower than the original ex-factory price. Our company has a professional team to trace the goods after sale for customers.