I'm interested in 1st and 2nd quality GPPS (General Purpose Polystyrene) and 2nd quality EPS that is used as raw material for XPS insulation board production.The acceptable extrusion grade if from 2 to 30 though the most preferable grade is from 7 to 30. GPPS color needed: transparent if possible; if not, yellowish, crude, soft colors. Anyway, I would be very grateful if I can see the photos of the material prior to be sent. Vicat A.