M and O Marine Construction Inc. is a Pittsburgh-based marine construction contractor providing pile driving, dock construction, and barge fleeting services on the inland river system, including the Ohio and Monongahela Rivers.
M&I Electric, LLC provides medium and low voltage power distribution solutions and professional field services for the global energy industry, including offshore drilling and marine vessel automation.
M. Brown Fitting Specialists Inc. is a family-owned business since 1930 specializing in grease fittings and lubrication supplies, offering a huge inventory and discount pricing as a master distributor for leading brands.
M. Harakhji and Sons is a leading exporter of second hand marine machinery, spares, and safety equipment sourced from demolished ships at Alang Shipbreaking Yard.
M. L. Limsico Sons Inc. is a company based in Binondo, Manila, Philippines, providing internet and connectivity services including dialup, leased line, and broadband.