欧美黄色激情一区二区,偷拍自拍日韩国产,亚洲人免费黄色片,婷婷久久成人一区,国产av精品高清在线观看,日本专区在线看片,亚洲av熟女高潮30p,青青青久97在线观看,美女后入在线呻吟

Engineering supervision

        In supervision area, GDE possesses Class A certificates of construction & installation engineering and mechanical & electrical installation engineering. In the process of over 100 previous supervision tasks, Huaqing earned high reputation with its effectiveness on control of quality, investment and schedule of project, in accordance with its principle of Excellent Service, Energy Saving, Preventing Pollution, Following Regulation and Health & Safety.