aftermarket

Aftermarket (also after-market) refers to any market where the customers who purchase one product or service are likely to purchase a related, follow-on product.

1. The company specializes in aftermarket car parts.
   这家公司专门生产售后汽车零件。
2. There is a growing demand in the aftermarket for smartphone accessories.
   对智能手机配件的售后市场需求正在增长。