亚洲亚洲永久无码77777_中文字幕久精品免费视频_玩弄白嫩少妇xxxxx性_成人网站视频中文字幕_久久精品无码一区二区三区不卡_免费精品无码AV片在线观看_亚洲人成在线观看_午夜爱爱激情欧美

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
吐鲁番市| 芦溪县| 惠州市| 满城县| 涡阳县| 余姚市| 平塘县| 泉州市| 芮城县| 富川| 宜州市| 醴陵市| 大同县| 顺平县| 红河县| 松江区| 宁夏| 望江县| 静海县| 琼结县| 辽宁省| 新田县| 乌恰县| 河间市| 台前县| 保靖县| 东明县| 织金县| 合肥市| 万年县| 常州市| 西华县| 黄石市| 德清县| 阿巴嘎旗| 肇庆市| 青海省| 正宁县| 巫溪县| 漠河县| 珠海市|