Location of fire hydrant - maximum distance between hydrant.
Friday, 28 December 2012
Sunday, 23 December 2012
Blasting Operation for Quarry
Blasting Operation
keywords:
blasting, cordtex, explosive primer, emulite 150
爆破作業
關鍵字：
爆破，cordtex，爆炸性的引物，emulite150
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