Goods which are covered or packaged with impervious materials like plastic, aluminium foil, tarred or waxed paper must be opened, cut or removed to allow penetration of the methyl bromide.

• 对于一些用不透气的材料(如塑料、铝箔、油纸或蜡纸)包装的货物，熏蒸前应切开或除去包装，以使溴甲烷能够充分穿透货物。