Shenzhen Shell Electric Technology Co., Ltd. specializes in high quality industrial automation control products with our own indepndent R&D team for many years, our main products are braking unit, ripple resistor, aluminum shell resistor, input output filter, input output reactor and so on, which are served for variable frequency drive.From the procurement of components, incoming quality inspection, process quality control, production verification equipment, manufacturing processes, factory inspection, service tracing and other links, have established a complete standard measures to fully ensure product quality and product traceability.