久久国产自偷自免费一区100-久久国产自偷自偷免-久久国产综合精品欧美-久久国内精品自在自线400部o-久久国内精品自在自线观看

您在使用過程,發(fā)現(xiàn)BUG通過在線問題提交由開發(fā)人員確定后,本站將會給予一個月廣告展示機會!
 位置:首頁 -> 產(chǎn)品 -> 環(huán)保設(shè)備 -> 噪聲處理  
聚酯纖維吸音板:聲學(xué)工程,吸音板 廠房降噪
| 詳細信息  
關(guān)鍵字:聲學(xué)工程,廠房降噪,吸音板,隔音,吸音,吸音棉
dbzz

1, polyester fiber is sound-absorbing board product is mainly used in indoor (metope, ceiling)

2, polyester fiber is sound-absorbing board is a porous material, magnified three hundred times as much to talk, we see the polyester fiber is sound-absorbing board is porous structure, it is because these cavity, polyester fiber is sound-absorbing board can sound-absorbing (voice after polyester fiber sound-absorbing panels in cavity formed by sound energy into backflow, heat).

3, decoration plasticity, use common wall paper knife, it can cut.

4, polyester fiber materials, what is polyester fiber (PET), polyester fiber material is oil chemical materials, commonly known as the polyester, is in the state of wire drawing, color after pressing into boards.

5, has sound-absorbing, fire prevention, environmental protection, noise reduction, moistureproof, characteristics, sound-absorbing, fire prevention, environmental protection for instructions

(1) polyester fiber is sound-absorbing board sound-absorbing mainly reflects in sound-absorbing noise reduction coefficient, according to GB/T20247-2006, average noise reduction coefficient (NRC) of 0.85 above, average absorption coefficient (100 HZ ac-4 KHZ) was 0.72. In the high frequency band, for better effect.

(2) polyester fiber is sound-absorbing board for national fire protection GB8624 B1 level (1997) national fire protection has four grade level A: doesn\'t burn. (like stone, steel, etc) B1 level: flame retardant. (mainly refers to fire left the fire spread speed slow) B2 class: flammable (as long as it\'s wood, etc.) B3 level: flammable (alcohol, fuel)

(3) environmental protection level is divided into: E0 level, E1, E2 class

Polyester fiber is sound-absorbing board far accord with a country (the gb18580-2001) E1, formaldehyde to release a quantity to < 0.1 (mg/l), index more than 1.5 mg/requirements (l) , which can be directly used for indoor

Fields: home cinema, hotel, studio, the music room, KTV, bars, theaters, meeting rooms, multi-function hall, the indoor stadium, etc

網(wǎng)站首頁 - 關(guān)于我們 - 使用協(xié)議 - 免責條款 - 版權(quán)隱私 - 網(wǎng)站地圖 - 友情鏈接 - 廣告服務(wù) - 會員服務(wù) - 免費注冊 - 聯(lián)系方式
問題請通過在線提問反饋 | 在線客戶QQ:105452034 | 收費會員及廣告咨詢電話13332201705 技術(shù)支持:遼寧衡駿節(jié)能科技有限公司
Copyright 2007- dbzz.net All Rights Reserved 東北制造網(wǎng)(東北地區(qū)唯一制造業(yè)網(wǎng)上平臺) 版權(quán)所有 遼ICP備2021008091號 遼公網(wǎng)安備21021702000105
為獲得最佳瀏覽效果,建議使用IE7以上,或Firefox7以上瀏覽器
經(jīng)營性網(wǎng)站
備案信息
百強網(wǎng)站
誠信聯(lián)盟
網(wǎng)絡(luò)110
報警服務(wù)
不良信息
舉報中心
主站蜘蛛池模板: 伊人这里只有精品| 孕妇孕妇aaaaa级毛片视频| 国产精品va在线观看一| 成人国产精品视频频| 视频免费黄色| 婷婷99av综合| 日韩一级欧美一级在线观看| 国产一区二区三区不卡免费观看| 国产在线色视频| 91中文在线| 亚洲欧美一区二区三区不卡| 国产精品福利视频主播真会玩| 亚洲精品一二三区| 亚洲国产精品一区二区久久 | 日本久久中文字幕精品| 免费一区二区| 国产成人高清精品免费观看| 97久久久久国产精品嫩草影院 | 亚洲精品午夜级久久久久| 久草视频新| 欧美日韩精彩视频| 国产精品久久久久久一级毛片| 97起碰| 国产欧美在线一区二区三区| 一级黄色片视频| 毛片在线播放观看日本| 香蕉视频最新网址| 好吊色综合网天天高清| 亚洲第一成年免费网站| 成人在线短视频| 国产精品亚洲精品日韩动图| 1000部啪啪未满十八勿入中国| 激情亚州| 美女被网站免费看九色视频| 日本 wwwwwxxxxx| 亚洲色视频在线播放网站| 免费又黄又粗又爽大片| 国内自拍视频在线播放| 性做久久久久久久久男女| 91精品啪国产在线观看免费牛牛 | 久久视频国产|