BOS 27:2000
14 MPa cpncrete stock bricks
Licence No : SM/05-05
Valid from 28 November 2005
Expires on 28 November 2008
BOS 29:2000
25 MPa-80mm interlocking concrete paving blocks
Licence No : SM/05-06
Valid from 28 November 2005
Expires on 28 November 2008