Wherever oil-changes are made on cars, trucks or other vehicles, that also means the exchange of used filters. Exchanges and maintenance works cause additional oily waste materials, such as oil cans, cleaning rags and ...

A decisive factor for the development of any country is the availability of building materials, such as cement, chippings, ballast, asphalt etc. Without these materials no housing project can be realized nor can the ...

Salt has always been indispensable for human and animal consumption, gradually developing into one of the most important raw materials of the inorganic-chemical industry. Nowadays the figures of salt consumption can ...

Considering the specific value of the various components that make up the human food chain, the egg must certainly be credited with being one of the most important and versatile foodstuffs in itself. Hardly any other ...

Pencils play an important role in nearly everybody's daily life. The main factors that influence the demand for pencils, are the degree of literacy attained, number of schools, colleges, the period of schooling, ...

Disposable syringes made of plastic material have been successfully used in medical and pharmaceutical practice for many years. The constantly increasing use of this type of syringe, indicates its importance, which is ...

With the ever-increasing use of cars, trucks and buses all over the world the production of spare and wear parts has become more and more important. That especially applies to automotive filter products. The production ...

For ages tools have been manufactured by hand. This process, however, is labour-intensive, time-consuming and expensive. A uniform quality standard can hardly be achieved. The demand for tools is steadily increasing ...

In tropical and suptropical countries the matchete is one of the indispensable tools. Its uses in agriculture are manifold. Owing to the quality of their parts (high-carbon tool steel, wooden handles, double fixture with ...

For thousands of years, building material has been re-used: in ancient Egypt material was taken from the pyramids to build new houses and the same happened in Rome where stones from the colosseum were used for other ...