How to write an announcement for the replacement group of idle second-hand goods

This group specializes in the sale and trading of idle goods. If related products are sold or traded, they can be released to the group.

The introduction of the idle cargo group can be written like this. Good things can be shared. What is not at home is all new or 70% to 80% new things can be sold in this group, taking up no space and earning pocket money.