OSB Oriented Strand Board OSB boards were invented and developed in North America, and are mainly produced in North America and Europe. OSB is a wood board made by stacking thin rectangular pieces of wood (strands) cut from logs into boards and compressing them at high temperature. The pieces are cut in a way that gives them strength, and the cross-laminated layers give it strength similar to plywood. It also has excellent insulation, airtightness, and insect resistance. Carefully processed wood grain The surface is lacquered and the cut edges of the boards are covered with veneer. It is a kind wood that has been beautifully processed so that anyone can use it safely.