久久影院无码怎么解除|日本成人综合在线观看|亚洲欧美中文日韩字幕v在线|国产AV秘?无码一区二区四区|青草中文在线视频|91精品国产91久久久久久青草|亚洲精品aⅴ中文字幕乱码

簡體中文 English
HomeAbout UsProductsCore TechnologyNewsThesisJoin UsContact Us

News

Company News Hot news
National Standard for PVC-U profiles for the doors and windows effective from May 1, 2018
Sources：本站　Date Time：2017-12-01 10:06:11　Views：Back
New National standard GB/T 8814-2017 for Unplasticized polyvinyl chloride (PVC-U) profiles for the doors and windows will be effective from May 1, 2018. It is stipulated that all PVC profiles shipped out from factories after May 1, 2018 must be lead free.

PreviousNo more

NextNo more

Share to： More
PrintRefreshTopBack
页游| 紫金县| 清远市| 瑞丽市| 昌邑市| 肃宁县| 霞浦县| 开阳县| 石泉县| 固原市| 社旗县| 合肥市| 衡水市| 洪雅县| 乐山市| 定日县| 内丘县| 佛坪县| 石阡县| 承德县| 昔阳县| 威远县| 曲水县| 阿图什市| 迭部县| 莒南县| 大同县| 临夏市| 广丰县| 临海市| 巴东县| 安宁市| 江川县| 红原县| 武冈市| 昭平县| 曲水县| 西盟| 三河市| 五河县| 宁乡县|