Charge technical service fee. According to the relevant information inquired, the courier group will charge a technical service fee of 6 ‰ for the completed order, and the refunded order will not be refunded. Kuaituan Tuan is an offline group buying tool launched by Pinduoduo. For consumers, through the quick group tour, you can directly see the details of group purchases, inventory information and other people's purchases, complete orders and check the logistics.