NEW YORK — Lumber Plus, a national chain of premium wood products retailers, will soon be opening its first Long Island location. Unitta Exotique Woods Corp., which does business as Lumber Plus, signed a 10-year lease for the 33,000-square-foot industrial building on 1.75 acres at 2175 5th Ave. in Ronkonkoma, New York. The company, which distributes high-end tropical hardwoods, flooring and other wood products, plans to open its new Long Island distribution facility this spring. Lumber Plus operates other locations in Miami, Clearwater, Fla., Houston, Sagamore Beach, Mass., and Mississauga, Ontario.