by the end of this month, there were 22 semi-trailer enterprises in Liangshan Trailer Base, which were approved by the state. They are 1 Liangshan Dongyue brand Liangshan Zhongji Dongyue Vehicle Co., Ltd., 2 MasterCard brand Shandong MasterCard Special Purpose Vehicle Manufacturing Co., Ltd., 3 Tongyada brand Shandong Liangshan Tongya Automobile Manufacturing Co., Ltd., 4 Yangjia brand Liangshan County Yangjia Trailer Manufacturing Co., Ltd., 5 Huayuda brand Shandong Liangshan Huayu Group Automobile Manufacturing Co., Ltd., 6 Lu Feng brand China Heavy Duty Truck Group Liangshan Sitong Special Purpose Vehicle Co., Ltd. 7 Liang Xing brand Liang Shanyu. Tong Special Purpose Vehicle Manufacturing Co., Ltd. 8 Luyue Brand Liangshan Huaxin Special Purpose Vehicle Manufacturing Co., Ltd. 9 Jinyue Brand Liangshan Far East Transportation Equipment Manufacturing Co., Ltd. 11 Haotong Brand Liangshan Huitong Transportation Equipment Co., Ltd. 11 Vodli Brand Shandong Liangshan Wode Automobile Manufacturing Co., Ltd. 12 Guangke Brand Liangshan Yonggu Trailer Manufacturing Co., Ltd. 13 Luchi Brand Liangshan Feichi Trailer Manufacturing Co., Ltd. 14 Kaishi Brand Liangshan Shengxin Group Special Purpose. Car Co., Ltd. 15 Shandong Enxin Special Vehicle Manufacturing Co., Ltd. 16 China Heavy Duty Truck Group Liangshan Longteng Special Vehicle Co., Ltd. 17 Feilu Liangshan Hongda Van Manufacturing Co., Ltd. 18 Xinke Shandong Liangshan Xinke Special Vehicle Manufacturing Co., Ltd. 19 Liangfeng Liangshan Yalong Machinery Manufacturing Co., Ltd. 21 Tongtong Liangshan Ju Yuan Special Vehicle Manufacturing Co., Ltd. 22 Liangshan Tongyu Group Special Vehicle Manufacturing Co., Ltd.