Our company is specialized in developing and manufacturing intelligent motor protector, the relay protection for electrical equipment and other serial products. We have a strong technology team and perfect testing equipments, advanced Machines and Production Line. HDER is committed to the quality of its products and the satisfaction of its customers. We always continually research and develop new products to meet the customers' need. The products are not only sold in domestic market but also exported to more than 20 countries and areas such as Southeast Asia, Middle East, America and Europe, etc. and won a good reputation form the clients. Customers Satisfaction is the pursuing goal of HDER forever. We will supply the superior quality products, reasonable prices, timely delivery and perfect services to satisfy your requirements. Look forward to establishing a long term business relationship and friendship with the customers from all over the world for the brighter future.