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Dedicated to providing customers with high-quality, reliable products and satisfactory services
Dedicated to providing customers with high-quality, reliable products and satisfactory services
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蓝宝石在各行各业都有所耳闻,要么是天然形成的,要么是人工合成的。无论是天然的还是人工制造的,都具有很强的硬度特性,而它的主要成分是氧化铝。蓝宝石是蓝色的,但蓝宝石窗口片是透明的。为什么是这样? ……
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