Master Service Technician (MST), namely technical service expert. The MST exam is globally recognized and the only certification exam in the industry, organized by Briggs & Stratton. At present, there are very few domestic dealers who have passed the exam to obtain qualifications, and Mr. Ye of Nanjing Weituo is the first Chinese dealer to obtain the certificate in 2010. How did he win the trust of customers through high-quality service and achieve success? Woolen cloth? Editor/Tian Zengpeng