亚洲精品中文字幕乱码三区,韩国V欧美V亚洲V日本V,好爽…又高潮了毛片喷水,亚洲AV片毛片成人观看

Inorganic spraying fiberglass is formed by inorfil and water base glue. By stirring and mixing with atomized water, it is sprayed with air compression pump when used to form paint-coat on substrate which need protected. This paint-coat can function as sound absorption, heat insulation and fire proofing. 

It is mainly used in the field of insulation of building interior wall, flame retardant and sound insulation.