3240 epoxy sheet 1,hard surface 2,chemical resistant 3 ... x 2020mm60--100mm1020mm x 2020mmI. Define and purposeThis laminated product is formed through heat pressing after electric industry ... oil .II. Technical requirement for surfaceThe surface of laminated board should be flat and smooth, no bubble, ... a little color patches is allowed. The surface of laminated board should be flat and smooth, no bubble, ...