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Studies and research

Decades of experience with thousands of exhumations on the national territory have led to the use of the zinc inner shell, with a certain thickness and certain fabrication characteristics, which has proven its efficiency in the field.

Zinc occurs naturally mainly in the form of complex sulphides (Sphalerite) and carbonates and silicates (calamines).
Within minerals, this element occurs by a percentage that goes from 4 to 20% and after the mineral is extracted, it is enriched by a flotation process.

Soft soldering is a soldering process. It is generally known as a type of soldering which does not imply the fusion of the pieces to be assembled.
This procedure is characterised by the use of filler materials with melting temperatures lower than 450 °C and capillary penetration between the pieces to be joined. It is because of these low melting temperatures of the filler material that this soldering type is called "soft".