Chang Longsheng Mach, & Elec. Technology Co., LTD.-Shenzhen, Was established in 2000, the headquarters is located in 2F, 8 Building, Nanshui Industrial Area, Westside Yanshan Road, Shekou Nanshan District Shenzhen.China. building area more than 1200 square meters, the existing staff of 120people, which more than 20 R&D employees and  10 senior industrial engineers. We have prefect industrial process in the Manufacturing and High-caliber employee. the developers of more than twenty, senior technician five, high skills technicians more than 10, with exquisite processing technology, high quality production staff.