黑人巨大ⅹxxxxxxx,天天se天天干天天,日韩欧美无马中文字幕,澳门 婷婷 五月 丁香,欧美色色95视频,777米奇影院狠狠色,97AV人人妻人人澡人人爽

Your position: Products
Environmental friendly damping plate

Environmental friendly damping plate takes special rubber and thermoplastic plastics as raw material by equipping of high efficiency environmental friendly fire retardant. It has features of heat resistance, sound insulation and high loss factor. And it is friendly to environment. Thus it is suitable for damping noise reduction of warship, submarine, high-speed locomotive and large bus.
Index:

Specific gravity

1.6-1.7g/cm³

Loss factor

0.5-0.8

Smoke density

=200

Application temperature

-30℃ — +90℃

Xenon arc aging(130℃)

≥ 140hr

Reagent resistance

qualified

 


Last : Damping sh 】 【[ Back ]】 【 Next : Car body e...