中文字幕欧美日韩,97久久久久亚洲,亚洲第一激情,国产高清大尺度一区二区不卡,成人国产网站,天堂成人一区二区三区,亚洲线精品一区二区三区八戒

産品(pin)詳情

board smallpox特點(diǎn)：

Installation method:

(l) aluminum ceiling purchased and supporting keel and fittings shall conform to product quality requirements and shall not be bent or deformed.

(2) in the process of transportation and piling, aluminum ceiling shall be used for leveling and shall not be subjected to pressure, and shall avoid high temperature and corrosion of harmful substances.

(3) the keel shall be installed flat, and the spacing deviation shall be controlled within the allowable range of 1.5m.

(4) when installing aluminum ceiling, if there is any deviation in size, it should be adjusted first and then inserted in order, so as to prevent deformation.

(5) the large lamps and lanterns, exhaust fan and other things should be fixed separately on the keel, not directly on the aluminum ceiling.

Want to be able to notice above 5 o 'clock only, basically can achieve the firm effect of aluminous smallpox condole top, avoid to appear not level off phenomenon. In the construction process, when necessary, can use ruler, hand test and other methods for observation and inspection.