青草亚洲图片在线_日韩永久免费精品视频_性色aV无码中文aV有码VR_久久精品国产亚洲āⅤ久_欧美精品久久久99精品综合天天天_久久人妻无码一区二区三区_国产免费AV片无码永久免费_久久人人做人人玩人精品

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
莆田市| 瓮安县| 桐城市| 金湖县| 汝南县| 肃北| 临夏县| 长丰县| 灌云县| 武安市| 富蕴县| 左贡县| 承德县| 富顺县| 延川县| 河西区| 龙江县| 铜川市| 嘉黎县| 东宁县| 兴化市| 兴海县| 文成县| 徐闻县| 古交市| 伊金霍洛旗| 永修县| 莱芜市| 大冶市| 绍兴市| 罗山县| 招远市| 馆陶县| 周口市| 芜湖市| 汤原县| 东兴市| 阿拉尔市| 安龙县| 唐河县| 洮南市|