一级a一级a爱片免费视频,91精品久久久久久久久中文字幕,国产一级婬乱片AV片AAA毛片,亚洲AV无码成人片在线观看蜜丝
Add to Favorites
Tengcon HOT | Set as homepage | Add to Favourites | Contact Us
Beijing Tengcon Technology Co.,Ltd, as the predecessor of Beijing Econtrolnet Co.,Ltd, was established in 2002. Tengcon Technology has 3 subsidiaries, which are Econtrolnet, Tengcon Zhi Yi Technology and Tengcon Automation Engineering Co., Ltd.In 2016, we established HK office (HK TENGCON GROUP LIMITED). Our products are widely used in the West-to-East Natural Gas Transmission Project, the Olympic works, the Tang Jiashan dammed lake Project. With nearly 10000 sets of production per year, We are widely accepted by our users and partners.

    此頁面上的內(nèi)容需要較新版本的 Adobe Flash Player。

    獲取 Adobe Flash Player

Copyright(C)2011 Beijing Tengcon Technology Co.,Ltd. TEL:010-59790086
Live Chat by comm100
一级a一级a爱片免费视频,91精品久久久久久久久中文字幕,国产一级婬乱片AV片AAA毛片,亚洲AV无码成人片在线观看蜜丝