If your problem is either sludge dischcarge or sewage-waters depuration deriving from marble or granite working process ... Relax yourselves, SIGMA GROUP is what you need!

Since 1991 SIGMA GROUP solves these kind of problems according to inforce laws, proposing personalized solutions adaptable to your own requests.
  Maurizio Bottura.
Sigma Engineering
Delta S.n.c. carpenteria metallica
 


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