mcgrath rentcorp was founded in 1979 and is headquartered in livermore, california. the company is a diversified business-to-business rental provider that is comprised of the following units: mobile modular management corporation, mobile modular portable storage, trs-rentelco, enviroplex, inc., and adler tank rentals. * mobile modular management corporation * provider of relocatable modular buildings for rent, lease, or purchase. mobilemodularrents.com * mobile modular portable storage * provider of portable storage containers and office / storage combinations for rent, lease, or purchase. mobilemodularrents-portablestorage.com * trs-rentelco * rents, leases, and sells electronic test and measurement equipment for rent, lease or sale for both general purpose and communications needs. trs-rentelco.com * enviroplex, inc. * manufacturer of division of the state architect (dsa) approved modular buildings for both public and private schools throughout california. enviroplexi