Home » Mega Machinery megamachineryco, Mega Machinery Co, new, used, pre-owned, construction equipment, heavy equipment, doosan, scania, cummins, dressta, hydrokhan, parts, service, rental, for sale, dealer, dealership, la Mega Machinery Co. was established 1985 by Eric and Angela Olsen in Lakeside, CA with the idea of renting construction equipment. Since then it has developed into a Parts, Sales, Service and rental operations serving all of Southern California and parts of Mexico.