Shenzhen Shi Langran Shuma Youxian Gongsi established in 2004, which is a enterprise has its own brand, product development, production and sales. It mainly engaged in electronics, mobile storage, digital products, and other fields. Longruner is the brand. The company has a manufacturing plant, with independent research and development capabilities, to provide strong support for the Longruner brand in China and overseas have good development. The company has more than 100 employees, includes of which 35 R & D engineers, sales of 30 people; and own 1,000 square meters plant, perfect production and testing lines.