SIS is authorized by ASTM International to reproduce and distribute ASTM standards in China and each ASTM standard, which is legally reproduced and distributed by SIS, contains the ASTM International Authorization Stamp.

• ASTM international授权SIS在中国境内合法复制和销售ASTM标准,SIS合法复制和销售的ASTM标准全部盖有ASTM international的授权章。