The vertical supports of the counter are durable aluminum extrusions, and the counter panels are made from a thick, rigid plastic.  The top and the locking door are both produced with laminated plywood for superior strength and security.  If desired, you can add a shelf for additional storage capacity.  The top and door come in your choice of laminates, and the side panels come in your choice of Sintra .  Sintra is a durable plastic material that is commonly used in the trade show industry.