为解决环己酮肟（尼龙-6关键中间体）传统生产过程中H2O2成本高、易分解，以及传统蒽醌法生产H2O2工艺复杂、效率受限等问题 ...

In most cases, hydrogen peroxide can be used safely in the ear to soften earwax and make it easier to remove. However, don't use it if you have a perforated eardrum or ear tubes, because it can cause ...

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