The development history of Mining Dump Truck in my country

my country has long relied on imports for mining dump trucks. It began to develop this product in the 1970s and did not form a certain scale until the 1990s. By the end of 2009, there were six or seven enterprises producing mining dump trucks in batches in my country, including Inner Mongolia North Heavy Duty Truck Co., Ltd., Benxi North Machinery Heavy Duty Truck Co., Ltd., Xiangtan Electric Motor Group Co., Ltd., and Beijing Shougang Heavy Duty Truck Co., Ltd. , Beijing Zhonghuan Power Heavy Duty Truck Co., Ltd., of which Inner Mongolia North Heavy Duty Truck Co., Ltd. is the only enterprise in China that can produce 25-360 tons of full tonnage on the same production line, including mechanical transmission and electric transmission dump trucks, with a continuous market share Over 70% for many years.