—SEC. 04 — Services

Services

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Services

Fuel Firing Systems

www.ffs-refiners.com

Processing and sale of liquid fuels for marine and industrial furnace applications. Expertise in waste oil recovery, processing of unconventional fuels, effluent treatment, and remediation of crude oil storage tank bottoms.

Added May 10, 2026

Services

National Heat Exchange Cleaning Corp.

www.nationalheatexchange.com

Providing cleaning and refurbishing services for heat exchangers and other equipment.

Added May 10, 2026