成人做爰视频www_天天搡天天狠天干天啪啪_驯服人妻hd中字日本_gogogo免费视频观看_亚洲图片自拍偷图区_宝贝再忍点灬舒服灬大点视频_娇乳欲女h奶汁翘_中文字幕av免费专区_性欧美老人牲交xxxxx视频

     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.