Dear sir: Most laminate base materials have a CTI of 250 or less when tested according to the UL method (CTI testing varies throughout the world - comparison must be conducted with a common method. Polyester based laminates have inherently superior CTI performance with results over 600. Laminates of this type can be purchased from Glasteel Industrial Laminates of Collierville, TN at +1-901-853-5070 ask for Curt Zimmerman. The IPC has a workshop which teaches basic information about all types of laminate materials. This would be a good place to start. I will send you some basic construction information on the laminate grades including the polyester type. Best regards, Doug Sober IPC Base Materials Chairman