rebate of glazing

例句：

1. 1. The company offered a rebate of20% on the purchase price.
   公司对购买价格提供了20%的回扣。
2. 2. The government has introduced arebate system to encourage people to buyenergy-efficient appliances.
   政府推出了一个回扣系统来鼓励人们购买节能家电。
3. 3.The manufacturer will give a rebate of$500 for every unit sold.
   制造商将每售出一台设备提供500美元的回扣。