Vical-A feeders are a standard among Latin American refineries producing petroleum based coke. Petrobras is a major customer for these machines, as Mavi is regarded as a reliable and only ISO 9001 supplier inthe region, with local technical assistance.

Since 1995 Petrobras has been purchasing Vical-A feeders. Mavi builds vibratory feeders since 1961 in Brazil, with over 4.000 units currently running in many facilities all over Latin America, mainly in Brazil.