Stephen H. Kornfeld is Vice Chairman of Greenstar Services Corporation, one of the country's leading heavy mechanical, plumbing, HVAC, electrical and specialty general contractors . He is also serves as CEO of Nagelbush Mechanical. Kornfeld is well-known and respected in the plumbing and mechanical contracting markets. In addition, he has a long history as a successful international businessman having participated in projects of significant size on a world-wide basis.