Why is my piano key sweking?

Is a fake ivory-made piano keys, in addition to the yellow color and piano age oil pipe, because of the plastic key surface of the special material, said to add white bone powder, can be repaired and polished treatment.

"The upper layer of the piano keys is now made of acrylic. That is, commonly referred to as plastic plexiglass. Over time, nature will age and turn yellow.

It's turned yellow, it's hard to turn white again. Can contact the piano brand, re-purchase your piano with the same brand of 88 keys, and ask the master door to install and commission. For the daily maintenance of the key, one is not direct sunlight, the other is to often clean, preferably wet cloth wipe ..."

Roll Piano electronic technology

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