The products controlled by software, so the accuracy, consistency, reliabilitty and economy of the product are greatly improved, and the convenience of simple adjustment features makes the user feel more convenient.We also produce ESD5500E, ESD5111, ESD6800E, ESD5330...The ESD5500E, ESD5111, ESD6800E... produced by our company is different from other companies' products. The function and the appearance is the same, but we usecontrol technology ofthe advanced micro computer inside the product, using the software algorithm to control the speed, so the quality is much better.