 PITTSBURGH--BUSINESS WIRE--Limbach Holdings, Inc. NASDAQ: LMB Limbach or the Company today announced that the Company has seen an increase in demand for the Companys expertise in the design and implementation of HVAC services in the growing cannabis, indoor farming and agriculture markets. The Company has secured contracts for a number of these facilities in several states, and has been building a market niche with indoor farming, which it believes will be a sustainable area of capit 