Where can I buy disposable items in Shanghai, such as chopsticks, cups, and those in hotels?

There are many places. I can only recommend you depending on which area of ??Shanghai you are in.

Generally, large-scale wholesale markets in Shanghai come with the kind of wholesale you mentioned. You can go to Cao'an Road Wholesale Market, etc.

Actually, small shops use wholesale. XING's items are all delivered to your door. You can try WEN WEN in other small stores first.

His delivery contact information will usually be told to you, as long as you are not next to him Just open a store.

If you are using it for a hotel, you can directly use "Shanghai Hotel Supplies" to search for N more contact information on "Baidu",