Our company is leader since many years in the design of centralized systems for the reorganization of these workplaces. There are many elements which lie at the basis of this type of system, but the most important thing is to perform the aspiration near the source.
Modern machines are already streamlined to optimize the control and they are fitted with a flanged vent for the connection to aspiration systems. The oldest machines, however, are not streamlined and in this case you can use different methods depending on the features of the machine. The most secure method is always to streamline the machine, but, in case this is not possible, there are various possibilities:
fume hoods on top of the machine with perimeter strips intended for the containment
use of articulated arms and a terminal hood which aspirates near the equipment
Polluted air is aspirated and conveyed to the collector or main branch of the piping.