Jiangsu WELM Technology Co., Ltd. is a specialized elevator signal system manufacturer and server. The company is located in Hai’an Industrial Zone, Nantong, Jiangsu, China. we are elevator parts industrial cluster place along the most flourishing Changjiang River Delta in China. Headquarters factories cover an area of 80,000 square meters. we owns electron machining, metal-working machining, glass processing, electrical assembly manufacture centers, Shanghai and Hai’an Technical R & D centers. we can supply full industrial chain service of concept design, 3D engineering design, sample manufacture.