... the public. We own six grades, here is A standard grade:GradeSpecificationBeads SizeFoam MultipleUseA Standard GradeA-1031.00- ... 1.6070-90For block and low density product A-1040.85-1.2565-85For product more than ... 50-0.8055-70For product more than 8mm thick A-1070.40-0.6050-65For lost foam, firebricks ... ,toy fillings and all kinds of thin wall products A-1080.30-0.5035-50For lost foam, firebricks, ...