Founded in 2001, Changlongsheng Mach. & Elec. Technology Co., Ltd. is a National High-tech Enterprise engaged in product research and development, procession and sales. Our headquarter locates at Room 2137-2138, Block B, Tianxia Jinniu Plaza, Taoyuan Road, Nanshan District, Shenzhen while our owned factory with total area over 5,000 square meters is at Floor 5, Building 27, Area C, Liantang Industrial Zone, Guangming New District, Shenzhen. Human-oriented and quality retraceable are the crucial strategy of the company. We have nearly 100 headcounts, 20 staff out of which are working in R & D field, whilst collaborated with the School of Materials Science and Engineering of Wuhan University of Technology since 2015 as the infield study for postgraduates students. These also enhance our R & D competence. Existing Category: potentiometer, convector, heating elements and its accessories. ISO 9001 and ISO 14001 are fully implemented in our daily operation and co-work with ERP system. All of these ensure consistency and stability in raw material procurement, product in processing, and finished product quality control. Mass productions are fully checked and ok before shipment. Main exported region: Southeast Asia, the Middle East, Europe, North America, Israel, Japan and Russia and etc..