Automation equipment of the processing plant: As a construction unit, we are honored to participate in the construction of Zhongliangshan Tunnel of Chongqing Rail Transit Line 27. The line continues
Experts shall be invited to review after the evaluation , there are 2000-3000 review fees here. The training cost of a person is about 400-500, and the cost of accommodation
Since then, several modifications and repairs have been carried out according to the use needs, the latest of which is the protective repair carried out in 2009. The double slope