Polystyrene (PS for short) is a thermoplastic resin polymerized from styrene as the main raw material. Polystyrene is mainly divided into general-purpose polystyrene (GPPS), high-impact polystyrene (HIPS) and expanded polystyrene (EPS), which is commonly known as general purpose polystyrene through benzene, the appearance of colorless, odorless, tasteless and shiny, transparent bead or granular solid. GPPS has the characteristics of high transparency, good gloss, easy processing, good dimensional stability and so on. It is widely used in consumer goods, food packaging, stationery, electronic appliances and other fields.

According to the "2021-2026 China General-Purpose Polystyrene (GPPS) Industry Market In-depth research and Development Prospect Forecast report" released by Siworld Industry Research Center, in recent years, thanks to the continuous release of market demand, the global GPPS market scale has gradually expanded, the development of 2020, the market scale has reached 62.5 billion yuan.At present, the global GPPS market has entered the mature stage, and the growth rate of the GPPS market will slow down in the future. It is estimated that the global GPPS market will maintain a low growth trend with a compound annual growth rate of 0.8% in 2021-2025.

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High impact polystyrene-HIEM

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Time of issue:2022-08-06 11:27:16

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Product Quality Certificate Production of trademark: Kunlun Product Number: 20210129PS40037 Product Name: polystyrene resin Product Brand: GPPS-500NT
Item	Standard Value	Results	Test Methods
Granular appearance; a /kg	≤0	0	SH/T 1541-2006
Melt mass-flow rate,g/10min	4.0~6.0	5.31	ISO 1133:2005
Tensile stress at yield,MPa	≥44.0	47.0	ISO 527-2:1993
Vicat softening point.℃ Dimension K. softening point. R	95~104	100	ISO 306:2004
Charpy impact strength,KJ/m2	≤3.0	1.3	ISO 179-1
yellow index	-8~-3.8	-5.5	ASTM E308-1
Residual styrene monomer，10^-6（WT）,10'6（wt）	<250	149	GB/T 16867-1997
Conclusion			Qualified

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General-purpose polystyrene-500NT

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