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By: NaturalFreeChoice.com Choosing the right technology helps to protect our environment, and at the same time makes our work easier, this type of technology is called appropriate technology. It is designed taking into consideration the ethical, community, economical, and cultural aspects from where it is going to be used. There are some characteristics that describe this technology like the reduction of electric use, reduction of labor, uses renewable energy and materials that are friendly for the environment, etc. Following are some example of this technology with a brief description: 1) Solar cookers a) Use heat from the sun and cooks slow b) There are several designs: 1) Heat trap boxes 2) Curve concentrators (parabolic) 3) Panel cookers 2) Solar dryers a) Can be used to dry vegetables and fruits b) Some designs are: 1) Plastic dryers: made of wood frame and wrapped with a clear plastic 2) Wood and glass dryers: uses air flow

First, the dark beer-colored sewage is pulled through a series of tubes stuffed with thousands of fibers pierced with holes 1/300th the size of a human hair. Anything larger than 0.2 millionth of a meter - which includes suspended solids and bacteria - is left behind. The cleansed water is then forced at high pressure through hundreds of tubes that are filled with tightly wound plastic membranes. Reverse osmosis, as the process is called, stops nonwater molecules - including viruses and pharmaceuticals.

Steinel hot air gun Ultraheat SV 900 and hot air gun HL 1400S Aktion heat shrink gun suitable for quick and even flameless heat shrink packaging of PVC and PE (polyolefin) shrink films on corrugated cartons and paper boxes. For maximum benefits use Pammvi's hot air blower with surface nozzle.