What does it mean for zhouzhi county Education Security Company to bid?

The tenderee (buyer) issues the tender announcement or tender sheet in advance. The tendering of zhouzhi county Education Security Company means that the tenderer (buyer) issues a tender notice or tender sheet in advance, puts forward the name, parts and varieties, quantity and relevant trading conditions of the goods to be purchased at the specified time and place, and invites bidders (sellers) to participate in the bidding.