Does Party A or Party B provide project requirements in the property bidding?

Party a. The bidder is Party A and the bidder is Party B.. In the bidding process, Party A is usually the tenderer, also known as the owner or demander, and is the unit or individual who needs to purchase or entrust services. Party B refers to the potential bidders or suppliers who participate in the bidding procedure and submit the bidding documents to Party A ... Bidding, bidding industry terminology, refers to the behavior that the tenderer (buyer) issues a tender notice or tender sheet in advance, puts forward the variety, quantity, technical requirements and related trading conditions, and invites bidders (sellers) to participate in the bidding at the specified time and place. The tender has begun.