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Licenses
and Services
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MD
State Journeyman Licensed Plumbers
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Medical
Gas Certification
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Backflow
Prevention Certification
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Certified
Welders
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MD
State Master Plumber License #7401
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Maryland
State HVAC License #5531
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Steam
and hot water boiler installation
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Design
and build plumbing systems
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Perform
pipe and duct work insulation
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Complete
refrigeration installation service
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MD
State licensed sprinkler contractor
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Mary
Jane Marker started with the corporation in 1999 as Office
Manager. She has a Bachelor of Science Degree in Accounting and
an Associate of Science Degree in Electronic Data Processing. She
successfully passed the Certified Public Accountant Exam in 1991.
In 2003, she began buying company stock and currently owns 12.5%
of company stock. She was previously employed as a financial analyst
at Kelly Springfield Tire Company.