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2 answers

cheap, tensile strength (to carry a larger load), puncture resistance

2007-03-06 11:32:27 · answer #1 · answered by MrWiz 4 · 0 0

i'd hazard a guess as: strength and water resistance as the two main ones!

2007-03-06 10:18:17 · answer #2 · answered by Al Cho 1 · 0 0

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