Alrosa is engaged in the exploration, mining, manufacture and sale of diamonds.

The company is engaged in the production and sale of petroleum products.

The company engages in the manufacture and sale of machines for the treatment of contaminated water.

The travel agency engaged in the black market purchase and sale of frequent flyer miles.

Mumias is engaged in the manufacture and sale of sugar.

The company is engaged in the exploration, production and sale of crude oil and natural gas.

He engaged in the manufacture and sale of lumber.

Marketing, Activities engaged in promotion and sale of products and services.

He subsequently engaged in the manufacture and sale of hardware in that city.

Yon engaged in development and sale of his Florida real estate holdings after retirement.