Tolian created the largest underground utility tunnel excavator
2018-06-04On June 2nd, 2018, the largest underground utility tunnel excavator, which is also the first set in China, rolled off the assembly line in Qinhuangdao manufacturing base of Qinh...

 
	 
															 
							 
															 
															 
															 
															 
															 
															 
															
 冀公网安备 13030502000240号
 冀公网安备 13030502000240号