public static List <GroupBuyingStockModel> GetGroupBuyingStockInfo(List <string> pids)
        {
            var data   = DalGroupBuyingProductGroupConfig.GetGroupBuyingStockInfo(pids);
            var result = data.GroupBy(g => g.PID).Select(g => new GroupBuyingStockModel
            {
                PID = g.Key,
                SHAvailableStockQuantity =
                    g.FirstOrDefault(t => t.WAREHOUSEID == 8598)?.TotalAvailableStockQuantity ?? 0,
                SHStockCost              = g.FirstOrDefault(t => t.WAREHOUSEID == 8598)?.StockCost ?? 0,
                SHZaituStockQuantity     = g.FirstOrDefault(t => t.WAREHOUSEID == 8598)?.CaigouZaitu ?? 0,
                WHAvailableStockQuantity =
                    g.FirstOrDefault(t => t.WAREHOUSEID == 7295)?.TotalAvailableStockQuantity ?? 0,
                WHStockCost                 = g.FirstOrDefault(t => t.WAREHOUSEID == 7295)?.StockCost ?? 0,
                WHZaituStockQuantity        = g.FirstOrDefault(t => t.WAREHOUSEID == 7295)?.CaigouZaitu ?? 0,
                TotalAvailableStockQuantity = g.Sum(t => t.TotalAvailableStockQuantity),
                TotalZaituStockQuantity     = g.Sum(t => t.CaigouZaitu)
            }).ToList();

            return(result);
        }