Balloting is a process to secure a unit of your choice during preview. During preview, you stand a higher chance of getting the best unit of your choice at a very competitive price from the housing developer.
(投票是在预览期间确保您选择的单元的过程。在预览期间，您更有可能以极具竞争力的价格从房屋开发商那里获得您选择的最佳单元)