TÀI LIỆU

1.CATALOGE

 

2. QCVN 16:2014/BXD

http://vatlieuxaydung.org.vn/thu-vien-vlxd/qcvn-16-2014-quy-chuan-ky-thuat-quoc-gia-ve-san-pham-hang-hoa-vlxd-4026.htm

1. ASTM

http://www.astm.org