Wartsila Panamá is a business involved in naval engineers, marine engineers, boat engineers, and ship engineers.

Mercansa is a business involved in ship suppliers.

Mediexpress is a business involved in laboratory articles, laboratory items, lab equipment, medical supplies, provisions, tools, instruments, surgical equipment for hospitals, doctors, medical supplies, provisions, tools, instruments, surgical equipment for hospitals, doctors, veterinary products, veterinarian products, and ship suppliers.

Mec Store, S.A. is a business involved in victuallers, ship suppliers, port operators, and port services.

Mayher, S.A. is a business involved in industrial security, industrial security alarms, industrial security systems, hardware stores and shops, tools, measuring instruments, measuring tools, electrical materials, electrical supplies, construction materials, construction supplies, and ship suppliers.

Masport Marine is a business involved in boat rental.

Maritime Steamship is a business involved in ship suppliers.

Marine Brokers, S.A. is a business involved in boats, ships, marine vessels, motorcycles, outboard motors, boat motors, marine engines, jet skis, personal watercraft, waverunners, and wave runners.

Manzanillo International Terminal Panama, S.A. is a business involved in storage of containers, sea and freshwater ports, sea towing, marine towing, boat towing, and ship towing. The business owner describes this business as “Canal de Acceso, Pilotaje y Remolcaciones, Muelles, Almacenaje, Contenedores.”

M R C, S.A. Asociados is a business involved in boats, ships, and marine vessels.