Unverified70% confidenceDecision RuleTime unknown
选购时按家具实际直角数量+20%损耗购买，透明款需备用替换（易脏泛黄）；一次性大包装（20-40个装）单价更低但常混入尺寸不符款，直角包角与边条应分开按需购买
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70%
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