国产精品多人P群无码,亚洲高清欧洲一卡,精品免费看国产一区二区,白浆一区二区三区

　　The Ninth China International Pipeline Conference was held in Langfang International Convention and Exhibition Center in 2016

　　April 12, 2016, by the Hebei Provincial People's Government, China National Petroleum Corporation, China National Petroleum Pipeline Bureau, Langfang City People's Government, the ninth China International Pipeline Conference held in Langfang. My company as anti-corrosion construction professional committee member units, over the years has been actively involved in which, together with experts and scholars on the cutting-edge technology and the latest developments in the discussion, and achieved positive and effective results of the meeting.

My company at the booth of the meeting

　　My company part of the business manager for customers to introduce our products

　　Our general manager also attended the meeting

　　Our engineers understand new products