Set Sheng Machinery Co., Ltd. is Bolet (Shanghai) Compressor Co., Ltd. the country's largest sales and service, one of the the Bolet products to promote sales and service, 2010, the company's annual turnover of over 120 million, the company pioneered 4S shop in the promotion of air compressor line marketing model to better service the different needs of different geographical customers in Shenyang, Beijing, Lanzhou, Zhengzhou, Hefei, Wuhan, Nanchang, Changsha, Kunming important provinces, cities have set up a company or professional services team, thirty minutes of sales response, two hours on-site service to solve response.