Air Products & Chemicals Inc., an Allentown supplier of industrial gases, said today its joint venture in India will build four air separation units and liquefiers. The cost was not disclosed.

Three of the plants will serve the general merchant market, and the fourth will supply Saint Gobain Glass India. The plants, expected to be completed in 2012, will produce liquid oxygen, liguid nitrogen and liquid argon.

The new plants are part of Air Products' strategy to support India's strong economic growth, includuing a seven percent annual increase in manufacturing over tne next five years, the company said.    -Paul Schweizer