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by 丁致良

ebook

如果你拿白鐵去賣給收破爛的，它們通常會拿出一個磁鐵來吸，他們認為吸得上的就不是白鐵。如果你在市面上買不鏽鋼器材，通常不鏽鋼分為 201 與 304。其實，不鏽鋼的世界並不是如此單純。