How many piano recycling companies are there in Shanghai?

There are some professional piano recycling companies in Shanghai. I searched and found several large-scale ones.

Shanghai Bai Tong Musical Instrument Recovery

Shanghai musician used piano recycling

Hayes musical instrument restoration

Hua Le piano recycling

Yinlv musical instrument rehabilitation centre

These are just some examples of possible piano recycling companies, not an exhaustive list. Among them, the piano recycling of Baitong musical instrument is the national chain recycling platform at present, and its evaluation on the Internet is also relatively good, and it will not lower the price like other musical instruments.