91传媒免费观看_精品无码久久久久久午夜_久久久精品国产sm调教网站_狠狠色丁香久久婷婷综合五月_男男r18禁视频同性无码网站_人人人爽

Company News
Weifang Changda Construction Group has won 10 patents more.

     This year, the achievements of science and technology innovation are constantly emerging. Up to October 31 this year we have won two "patents fo invention" and eight "patents for utility model" authorization.

     These 10 patents are respectively: invention patents: building interior wall plastering construction method/the filling pile static load test of pile head fixed method, the patent for utility model: a kind of pipe plugging device/a turnover of reinforcing steel bar stool/ceiling drilling device/a scaffold even wall exterior walls/a floor drain construction fitting/ a sealing device/ buried in a rubber water-stop fixing device/a kind of emergency lighting control circuit.

 

主站蜘蛛池模板: 色秘?乱码一区二区三区唱戏 | 日韩精品 无码专区 | www.在线观看麻豆 | av免费在线播放 | 韩国av一区二区三区四区 | 玖热在线 | 色老板最新地址入口处 | 亚洲女人自慰精品久久久自慰 | 国产在线视频网 | 扒开粉嫩小泬舌头伸进去视频 | 99精产国品一二三产 | 欧美成人永久免费a片 | 成年女人免费毛片视频永久vip | 亚洲国产成人久久 | 国产日韩欧美91 | 被强到爽的邻居人妻2 | 国产精品国产三级国产午 | 999久久久免费精品播放 | 日本少妇高潮喷水视频 | 奇米欧美| 婷婷久久国产对白刺激五月99 | 成人精品视频99 | 亚洲性AV网站 | 亚洲精品国产偷五月天丁香 | 日本高清H色视频在线观看 国产吃奶摸下激烈视频无遮挡 | 美女不遮不挡的免费视频裸体 | 12一14幻女bbwxxxx在线播放 | 国产精品视频自拍 | 影视av久久久噜噜噜噜噜三级 | 两个人看的www免费高清 | 国产精品区一区第一页 | www.麻豆com| 老外黑人欧美一级毛片 | 国产精品人人做人人爽 | 亚洲有码转帖 | 久久人妻AV中文字幕 | 91麻豆麻豆 | 亚洲AV无码东方伊甸园 | 青青久久久 | 国产chinese男男gaygay网站软件 | 欧美精品手机在线 |