Our target market is in mainland China, mainly those machine tool factories.

我们的目标市场在中国大陆，主要是那些机床工厂。

Machines replaced hand tools, factories sprouted up in cities and towns, and a sharp uptick in coal combustion polluted the skies.

器取代了手工工具，工厂在城镇里涌现，煤炭燃烧量急剧增加导致了空气污染。