[問題] 安全帽的材質問題
請問一下為什麼安全帽的價格差異如此之大?
假設這我今天花一萬塊買一頂安全帽, 有辦法保證廠商使用的料是最棒的嗎?
哪邊可以查到用料的數據?
小妹想要深入研究這一塊, 請高手幫忙解答, 謝謝!
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