“主要经营”用英语怎么说

Mainly deal in.......后面加产品，例如：Mainly Deal in art product,glass，主营艺术品，玻璃等

还有一种可以翻译为：Main Business

our main business is exporting medical product.我们主营医疗器械的出口业务。

这个要看你的"主要经营"是什么词了,如果是动词,可以用specialize in, mainly deal in/with, 如果是名词可以用:Principal business,

我是做外贸的，我常用：
specialize in ...
和
principal business

例句：
1、We are specializing in exporting and .......
2、Selling household cooking appliance is our principal business.

Main management

main business