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Welcome to EHS

EHS is the global distribution company of the German company Tetradom Gmbh,is in charge of the sales channel construction of TETRADOM ® and Wellan® brand.
TETRADOM GMBH is the production and sales partner of WELLAN GMBH. The main products include the Wellan®2000 ring, Power ring, invented by Mr. Klaus Wagner, the founder of Wellan Gmbh. TETRADOM develop the new quantum products based on this technology.
Our products improve the quality of water in purely physical ways and solve problems such as scale, rust, bacteria and algae that have harassed industrial and domestic water for long time. This technology is derived from the study of ultra-fine vibration waves in quantum physics. By empowering special materials to generate special ultra-fine vibration waves, it changes the existence form of scale and rust substances in the water, causing solid sediments to break away from the pipe wall, then be carried away by water. Achieved descaling and removing rust effect …
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This technology has benefited more than 100 countries and regions in Europe, America ,Afraica and Asia.


This technology has been applied steadily for more than 30 years.


It has been authorized to sell and promote the technology in 20 countries around the world, such as the United States, Australia and New Zealand.

Main Functions

WELLAN® 2000 technology is a biosignal water treatment device that frees pipes from limescale, stops corrosion ,make water healthy and works regardless of whether the water is flowing or at rest. Creating harmony between man and nature with our “green technology” is one of our top priorities.

Remove CaCO3 deposits and make pipelines smooth
Remove Fe2O3 and form Fe3O4 layer to prevent corrosion
Reduce the number of bacteria and retain minerals in the water
Regulation of water balance. Detoxification and purification

Water Treatment Qantum Devices

• No energy consumption
• No carbon emission

• No material consumption
• No pollution

TETERDOM offers the right solution for circulating water treatment. Equipped with a TETERDOM ring, it can not only remove scale and rust in the pipe, but also prevent new rust and scale from forming. It can also inhibit the growth of bacteria and algae.The functionality and effectiveness of quantum devices offer many interesting possibilities. Our products prove this and are suitable for use in different environments and equipment at home and industry. We have more than countless very satisfied customers around the world.

Overall customized solution for circulating water system

• Efficient
• Pollution-free

• Economical
• Sustainable

When integrated with a large circulating cooling water system, the water treatment device needs to be customized according to the special needs of the system.

By using water treatment devices of different specifications and according to the specific equipment combination of the water treatment system, the optimal solution can be formulated. Implement installation and customize supporting services at different stages.


Fuel saver

Improved viscosity or lubricity.

Forward-looking Technolog, more efficient and more economical

Better atomization of the fuel or heating oil. Improved viscosity or improved sliding properties. Better combustion. Higher performance of the motor vehicle engine. Lower pollutant emissions Longer service life of the machines and devices. Fuel savings or heating oil savings of around 10-20 %. Less engine noise,clean burner.

Various industrial equipment are powered by ordinary gasoline, high-quality gasoline, diesel, biodiesel, etc.

Various vehicles, yachts, ships and other transportation vehicles use fuels including ordinary gasoline, high-quality gasoline, diesel and biodiesel as power.

Used in life

Make our life better

Wellan 2000 rings are green technology. It saves water, saves electricity, contains no chemicals, does not release magnetic fields or electromagnetic radiation into the environment, and most importantly requires no maintenance. This is the best way to scientifically simplify complex problems. The Wellan2000 ring aims to revolutionize the way people think about water treatment. The future of water treatment has arrived, and it’s time to experience for yourself the surprises that Welland products can bring to you.

Video Showcase

Remove the scale in your home’s water pipes and electrical appliances

Remove Rust

Remove rust deposited on water pipe walls

Inhibit Bacteria

Inhibits the growth of various pathogens such as E. coli

Inhibit Algae

Inhibits the growth of microorganisms such as algae


Customer Testimonials

Our Distributors

We already have dealers in 17 countries and regions, and people in more than 100 countries and regions have benefited from our water treatment device.
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