Industry classification or industry taxonomy organizes companies into industrial groupings based on similar production processes, similar products, or similar behavior in financial markets.

In 1954, the union proposed that the local unions be amalgamated along industrial groupings to make the union strong.

Eventually, looser industrial groupings known as Keiretsu evolved.

Workers from both industrial groupings therefore struck to gain union recognition and to compel recognition of their collective bargaining rights.

The result was one large industrial grouping that was unable to agree on how the contract should operate.

In Japan, for instance, most large companies belong to an industrial grouping that includes at least one bank and generally supports all the members of its family.

Many industrial groupings have been used for academic research when looking at professional services firms, making a clear definition hard to attain.

Europe needs powerful integrated industrial groupings in this area, as in many other industrial sectors.

Historically, the Japanese banks have used their shareholdings to reinforce ties to clients and other members of integrated financial and industrial groupings, known as keiretsu.

It also says that Japanese corporations tend to buy insurance from insurers in their own keiretsu, or industrial groupings.