Where can I buy rock mouthparts in Shanghai?

A: There are a large number of homeless people near Yaohan, Pudong. Their CDs are essential and the price is reasonable. There is also a state-owned store, the quality is guaranteed, but it costs 8 yuan each, and the update speed is very fast. B: On a small road between Xujiahui Ganghui Square and Yin Hui Square (underground garage door), there are many CD stalls every afternoon after three o'clock, with quite a variety and good content, basically quite a lot and good content, basically 5 yuan each. C: At the terminal of Wujiaochang No.55 Road, there is a CD seller, who is from Guangdong and surnamed Jiang. There are many good things, all of which are expensive. He also has a large number of rock VCDs, which may be the most complete one in Shanghai. D: Opposite the main entrance of Tongji University, at the intersection of Zhangwu Road, there is a car repair booth next to the post office. From there, there is a CD seller. The two brothers, surnamed Ma, are also from Guangdong. There are many old things and new things in recent years. The most important thing is that there are often some strange things you don't expect, such as PRIMUS enhanced CD, which is not expensive. E: Taixing Road (at the intersection of Xinzha Road), there is a video store that sells punch-in CDs. The boss's name is Zhang Bing, and he used to sell punched films in China Library. There are not many things, but there are good things from time to time. F: Conservatory of Music: Many people buy it, so it's not cheap, like 10 to 15 yuan. It's not that easy to change. In addition, sometimes there are stalls near the music bookstore on Nanjing Road. If you really want to find more things, ask those vendors where to wholesale. G: There are four largest ones on Qufu West Road, namely the Four Brothers in Guangdong. Five families are all in Qufu West Road, and no one is hard to find. The goods are good and the price is good. It can be said that it is the source of Shanghai, and it is bought once a week. Dzmz Market on Xikang Road: It's very popular. Many people have made holes, and it has been repaired. There are many versions of d, and 6 yuan is very cheap.