BOS 27:2000
10MPa concrete masonry units
Licence No : SM/11-04
Valid from 10 May 2011
Expires on 09 May 2014
BOS 27:2000
14MPa concrete masonry units
Licence No :SM/11-05
Valid from 10 May 2011
Expires on 09 May 2014
BOS 29:2000
25MPa-60mm interlocking concrete paving blocks
Licence No :SM/11-06
Valid from 10 May 2011
Expires on 09 May 2014