For waterproofing, but
• based on fabric or foamed material; Pluses low cost; Cons stretches greatly, has a peculiar smell of prolonged action;
• nitroglycerin: the ideal material for waterproofing, but all the same, is very inflammable;
• based on fabric or foamed material; Pluses low cost; Cons stretches greatly, has a peculiar smell of prolonged action;
• nitroglycerin: the ideal material for waterproofing, but all the same, is very inflammable;
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