久久AV青久久久AV三区三区,亚洲综合色就色手机在线观看,国产精品久久久久成人,99久久国产综合精品五月天喷水,99久久精品国产网站,久久久中文字幕日本,无码精品日韩一区二区三区,精品无码福利在线网站

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
赤水市| 大埔县| 泸州市| 浪卡子县| 凤城市| 定襄县| 威海市| 滨州市| 全州县| 崇信县| 汉沽区| 黄大仙区| 油尖旺区| 屯门区| 同心县| 图木舒克市| 丽水市| 宁陕县| 丹江口市| 余干县| 依安县| 年辖：市辖区| 柳林县| 隆子县| 甘德县| 武乡县| 抚州市| 布拖县| 永泰县| 高青县| 舒兰市| 界首市| 监利县| 墨竹工卡县| 黄大仙区| 虹口区| 夏津县| 旅游| 建平县| 武安市| 惠东县|