Haitian wholesale market should have it. I don't know which booth it is. Everything is sold there. Medicinal materials, cloth, toys, snacks, furniture, etc., you should not lack everything you are looking for. I have a friend whose family seems to be buying tableware to open a restaurant. I vaguely remember taking the first train to Haitian wholesale market.
If you tell the truth, if you can't buy steel, there will be a lot of steel market, and you really don't know much about it.