Today, solar power is considered the most abundant and pollution-free of all known energy sources — and we've only just begun to tap its incredible potential.
When you consider that enough sunlight falls on the earth's surface each minute to meet the world's energy demands for an entire year, it's clear that sunlight represents a brilliant solution for our energy needs.
While energy radiating directly from the sun has always been available to us, now we can effectively harness it. Since the development of the first solar cell in 1954, its usage has continued to grow steadily along with its efficiency.
General solar questions? Confused on terminology? Don't know where to start? If any of those questions apply to you, you'll find general solar knowledge in here ranging from a glossary, a starter FAQ, different PV types, various system types, and any other general knowledge information that will help you get up to speed with all of this solar Mumbo jumbo.

Providing latest in German water saving, reuse and cleansing technology enabling South African architects, developers, builders, home owners and industries to conserve potable drinking water and by doing so save money. 

INTEWA of Germany, world leaders in the field of rainwater harvesting, waste water sanitising and commercial drainage and attenuation systems. We offer water saving and sanitising technologies enabling the reuse of rainwater, runoff water, commercially contaminated water, domestic greywater - for residential and cluster housing projects, commercial buildings and industrial applications.

If you an architect, builder, developer, town planner or a family, undergoing residential renovations where a plumbing upgrade is involved, installing INTEWA water saving systems could be the key to:

          minimising your reliance on municipal water supply
          significantly reducing monthly water bills 
          preparing for future water saving & re-use legislation
          doing your part to save a precious & dwindling resource

Over the years Dual Products has gained a multitude of experience in the design and manufacture of specialized valves for all applications including high pressure and high wear applications, ...
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