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How to deal with the knotting phenomenon of the vivica fox wigs and how to maintain human hair wig

The vivica fox wigs knotted reasons Everyone hair is not tested for a long time, it will become very chaotic, and even a knotted situation, The vivica fox wigs is actually the same as our live-haired hair, and does not have a constant nutrition suppl…

Precautions for the use of the nu 307 bearing and how to maintain the bearing to extend its service life

How to judge the nu 307 bearing failure A sound meter is used to check the size and sound quality of the rolling sound of the nu 307 bearing in operation. Even if the bearing is slightly damaged such as peeling, abnormal and irregular sounds will be…