one     The sum of the number of orders to be paid by the buyer and the number of commodities with leading auction bids shall not exceed five

two     Effective bargaining limit: 1-3 Star users three Times, 4-5 Star five Times, 1-3 Drilling users eight Times, 4-5 Drilling users twelve Times, 1-3 Crown user seventeen second ,4-5 Crown user twenty-five Times.

three    Manual bidding, bidding users are not allowed to use the same account ID Successive bids

four    The maximum bid amount set for automatic bidding cannot be the same as that of other buyers, and the price is confidential to other members.