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The crystal shape, whiteness, purity of products are up to quality standard.
产品的晶型、白度和纯度等达到质量标准。
youdao
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The product has high purity, standard hue and stable color.
产品纯度高，色调正，色泽稳定。
youdao
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The product has high purity, standard hue and stable color.
产品纯度高，色调正，色泽稳定。
youdao