E.P.S. (Expandable Poly Styrene) is a lightweight, rigid, plastic foam insulation material produced from solid particles of polystyrene. Expansion is achieved by virtue of small amounts of pentane gas dissolved into the polystyrene base material during production. The gas expands under the action of heat, applied as steam, to form perfectly closed cells of EPS. These cells occupy approximately 40 times the volume of the original polystyrene bead. The EPS beads are then molded into appropriate forms suited to their application. Products made from foamed polystyrene are nearly ubiquitous, for example packing materials, insulation, and foam drink cups.

Flame Retardart 

Grade	Specification	Bead Size(Diameter)	Expandable Rate (one time)		Foam Density	Applications
C-Self Extinguishing Grade		mm	Times		g/l
	C-102	1.40-2.00	50-70		14-20	Block
	C-103	1.00-1.60	45-65		15-22	Block and big packaging product
	C-104	0.85-1.25	40-65		15-25	Block and big packaging product
	C-105	0.70-1.00	40-60		17-25	Block and medium density packing product
	C-106	0.50-0.80	30-50		20-33	High density block and special products
	C-107	0.40-0.60	25-40		25-40	High density block and special products
	C-108	0.30-0.50	20-40		25-50	High density block and special products

Regular Grades

Grade	Specification	Bead Size(Diameter)	Expandable Rate (one time)		Foam Density	Applications
D-Fast Cycling Grade		mm	Times		g/l
	D-103	1.00-1.60	60-70		14-17	Electronics packaging, block and Chinaware packing and high density products
	D-104	0.85-1.25	50-65		15-20
	D-105	0.70-1.00	40-60		17-25
	D-106	0.50-0.80	35-55		18-29

Grade	Specification	Bead Size(Diameter)	Expandable Rate (one time)		Foam Density	Applications
B-High Expansion Grade		mm	Times		g/l
	B-103	1.00-1.60	80-100	180-200	10-12.5	Electronics packing, block, craftwork,box etc. Especially used for low density block
	B-104	0.85-1.25	70-90	160-180	11-14
	B-105	0.70-1.00	60-80	130-150	12.5-13
	B-106	0.50-0.80	50-60	100-130	13-18
	B-107	0.40-0.60	30-40	60-90	25-33
	B-108	0.30-0.50	20-35	40-70	18-50

Grade	Specification	Bead Size(Diameter)	Expandable Rate (one time)		Foam Density	Applications
A-Standard Grade		mm	Times		g/l
	A-103	1.00-1.60	70-90		11-14	Block and low density products
	A-104	0.85-1.25	65-85		12-15	Products more than 12mm thick
	A-105	0.70-1.00	60-75		13-17	Medium density packaging products
	A-106	0.50-0.80	55-70		14-18	Products more than 8mm thick
	A-107	0.40-0.60	50-65		15-18	Products more than 6mm thick
	A-108	0.30-0.50	35-50		20-28	Moulding and special products i.e. headpieces