Need Commercial 12 story building windows washed

I need a good commerical window washing company to sub-contract business to in Maryland and DC. Right now I have a 12 story post construction cleaning job I am working on and they want us to do the exterior windows. We only clean windows up to 4 stories. Call me or email me if you are interested in the work.
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Schumans Commercial Cleaning

You may want to try them, Im not sure if they accept sub work though… they are pretty major.