50 years of Austrian Petrochemical Industry (Austria 1980)

Stamp 50 years of Austrian Petrochemical Industry it reflects the thematic directions:

In microeconomics, an industry is a branch of an economy that produces a closely related set of raw materials, goods, or services.For example, one might refer to the wood industry or to the insurance industry. 

In physics, energy (from Ancient Greek ἐνέργεια (enérgeia) 'activity') is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light. Energy is a conserved quantity—the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The unit of measurement for energy in the International System of Units (SI) is the joule (J).