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Large building materials or home building materials stores are available, remember that the style is a rotating steel cable with a spiral wire at the front. Seek adoption.
Kitchen unclogging is available right where sewer pipes are sold.
You can buy this stuff at a regular hardware store. If you want to compare prices, it is recommended that the wholesale department of the big market has more goods there, and the prices are also different.
You don't have a market or anything over there, usually in hardware stores.
I haven't seen much of a brick-and-mortar store. But you can take a look on Taobao, there should be quite a lot!!
There are many sanitary ware brands that have to be sold. It's best to take a look at the local building materials market yourself.