Under normal circumstances, the deposit should be returned immediately after the bidding activities, but the refund procedures in the actual process are complicated, and it usually takes 1-3 months to return it. At present, many enterprises generally do not apply for a deposit, but directly apply for a letter of guarantee, which is particularly cheap. I applied in Jin Xin before. The highest cost is only a deposit of 3%. Moreover, the procedure is simple, the period is short and the cost is low.