Ask for several better "barter" websites.

Now there is a barter website with the Chinese name "barter Dangdang" or "chemical Dangdang". This website provides a platform for both parties to exchange idle goods. Anyone who has idle goods can post exchangeable idle goods on this website, and it is completely free. If the two items that can be exchanged have the same price, they can be exchanged directly on the platform, and neither party needs to pay the other party for the goods. If the prices of the items that can be exchanged by both parties are different, they can exchange items with low prices by making up the difference.