Shandong [DC control manufacturers] [DC control production Shandong Lee crown Technology Contact: Manager Cao 15953810777 Shandong Lee crown of Electronic Science and Technology Co., Ltd. is specialized in producing high-voltage inverter, rig special inverter enhance machine specific frequency converter, frequency heating power constant pressure water supply control cabinet, high voltage inverter series KJPT series of mine explosion-proof and intrinsically safe type inverter, electric submersible pump voltage inverter, a variety of low voltage general purpose inverter and traction network leakage protection, BKT-1 upgrade integrated protection the WDT-type temperature logging devices, remote power monitoring system, air compressor microcomputer protection device fan remote control system, air compressor remote control system, flameproof electric meter, portable switch, digital hedging signaling devices verbal signals of sound and light, explosion-proof switch calibration station. Concurrently such as mechanical and electrical products, mining accessories, rubber products. Business philosophy: integrity, innovation, development, self-service concept