Which auction art companies in Beijing don't charge upfront fees?

Hong Kong Shengbao International Auction Co., Ltd. Beijing Office Shengbao Shi Sheng Folk Art Co., Ltd., according to the actual works, some are free and some are charged. All auction companies are the same, first of all, it depends on what things are like, and then the price. If there is no buyer, of course you have to accept everything. There is no difference between good and bad, huh?