It is an investment to be classified in the profit and loss. The projection distance for defoaming a roof had to be measured in a dining room and yet in great. The battery, once charged, lasts only 10 minutes and there are air bubbles in the pipe going from the container containing the product to be projected to the sprayer. Moreover, rudeness, incorrect, Ecojet website interlocutors because they do not respond at all to emails you send them either to phone calls. Alain Letellier.