Despite being separated from the "Bird's Nest", Sun Weishan, deputy secretary-general of the China Petroleum and Chemical Industry Association, did not have time to watch the match. He is preparing for the largest ever gathering in the petrochemical industry.
Petroleum and c.......

Prior to the Luoyang Petrochemical Polypropylene pelletizer, the fitters in the maintenance workshop of the company were busy disassembling the old pelletizer template. The technicians of the equipment pointed at the circular metal plate with smooth and bright surfaces and many small holes arr.......

Since the establishment of Shenzhen Dazu Laser in 1992, with the support of powerful capital and technology platform, the company has realized the leap-forward development from small power to large-scale high-power laser technology equipment research and development, providing.......