Well-known brands abroad mainly operating machinery and equipment.

主要经营国外知名品牌机械设备。

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The products are mainly operating in the automobile, shipbuilding, cooling towers, pipes, piano, handicrafts, marble, Resistant Putty, and other fields use.

所经营的产品主要在汽车、造船、冷却塔、管道、钢琴、 工艺品、 大理石、原子灰等领域使用。

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Mainly operating the "Dragon Vision," a series of licensing West Lake Longjing tea is the national tourism companies producing commodities, "the state gifts tea" sentinel units.

主要经营“龙泓”牌西湖龙井茶系列，是全国旅游商品定点生产企业、“国家礼品茶”定点承办单位。

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There are numerous different armed groups mainly operating in eastern DR Congo.

BBC: South Africa charges DR Congo 'rebels for coup plot'

As a developer Android 2.3 Gingerbread is still the largest % of the market therefore when you develop for android your developing mainly for operating system that is 2 years old where as the majority of iOS users are now running iOS6 something that was just released a couple of weeks ago with many new features.

FORBES: Apple, Android, Windows Phone, and 'The One Percent' of Technology Bloggers

Pan American Energy is an oil and gas company operating mainly in Argentina.

FORBES: Magazine Article