40 Treatment of water and drinking water using decanting, flocculation, filtration processes to remove unwanted elements such as but not limited to sulfur, iron, manganese, calcium, arsenic
37 Installation, maintenance and repair of water and drinking water treatment plants using decanting, flocculation, filtration processes to remove unwanted elements such as but not limited to sulfur, iron, manganese, calcium, arsenic
The wording "ACVARENA" has no meaning in a foreign language.