PLASTECH is a famous manufacturer specializing in complete XPS Thermal Insulation Foam Board Extrusion Lines.The most important feature for edge grooving machine is "fouredgesgrooving, one time shaping".This is the first invention in China. Whengrooving the four sides into L or V shape, it will solve the problem that thediagonal of sheet material is not accurate after machined by otherequipments. After the accurate grooving for the four sides and corners, thetolerance will be controlled within 1.5mm.