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China Suppliers EPS Resin Granules Expandable Polystyrene CAS: 9003-53-6. High Purity Polystyrene: Main component is 92%~96% Polystyrene resin. Versatile Applications: Suitable for roof insulation, toy fillings, and roadbed fillings. ISO 9001 Certified: Manufacturing process certified under ISO 9001:2015 standards. Multiple Density Options: Available in four density ranges from 12.0 to 25.0 g/l. Flexible Bead Sizes: Bead sizes range from 0.50mm to 1.60mm for different needs. Fast Lead Time: Peak and off-peak season lead time within 15 working days. Low Moisture Content: Water content strictly controlled between 0.95% and 1.26%.