Prex Pro was born as a division of SIMMM Engineering and its history goes back a long way. Edgardo Mariani in 1986 from a small office on the outskirts of Milan founded a family business for the marketing of electric motors. Shortly thereafter, he created the first high-pressure pump with a mechanical and engineering vision that was not only innovative but totally different from traditional products. From the Italian market, the company expands to European and world level, selling in all 5 continents. Hence the division that deals with the production of professional cold water high pressure cleaners was born, decreeing worldwide success.






professional, cold water high pressure cleaners.
Prexpro is a new division of SIMMM Engineering about pressure washers and piston pumps
SIMMM moves its offices to the Cinisello Balsamo plant in the industrial area of Milan with an area greater than 2,500 square meters.
The AXA model born, a pump destined to change the rules of the market
In 1986 Edgardo Mariani founded SIMMM Engineering, manufacturer of electric motors.

Prex Pro is a division of SIMMM Engineering, iItalian company that operates on national and international markets with the highest quality trends..
The high pressure cleaners are rigorously designed and manufactured in Italy.