Mario is a sole proprietorship specializing in used tracked bulldozers. He focuses on acquiring and refurbishing classic models such as the D4 and D6, and has his own simple repair workshop in Alajuela, primarily serving local land leveling and agricultural development clients.

With over 45 years of industry experience, Maquinza has 13 branches throughout Spain. As a giant in the Spanish machinery industry, they not only offer equipment rentals but also have a large-scale used equipment sales department. Their "Maquinza Used" brand enjoys a prestigious reputation in the global used machinery market. They offer global sales, rental, and refurbishment services for used construction machinery (excavators, lifts, generator sets).

Founded in 2008, this company is one of the most influential used machinery importers and exporters in the northern gateway region of Mexico. Known for its "Machinery Hunters" model, the company specializes in sourcing high-quality decommissioned heavy machinery from the US and Canadian auction markets for Mexican clients. It focuses on the buying, selling, and refurbishing of used Caterpillar, Case, and John Deere excavators and backhoe loaders. The company provides professional cross-border customs clearance, logistics, and the "Trato Express" fast transaction service for used machinery.