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The world of polystyrene (PS) production capacity due to the rapid growth in the past 20 years in Asia and the production capacity of record highs, to the last century the production capacity has exceeded 13 million tons / year, the consumption of the world in the same period of polystyrene only about 10 million tons, accounted for only about 77% of production capacity. Excluding the impact of various factors, the global polystyrene unit operating rate has not exceeded 80%.

Since 2000, the consumption of polystyrene in the world has been slowing down, and consumption has only increased by 1.4% compared with 1999, and the growth rate is a new low in recent years. Especially affected by the Asian financial crisis, most countries and regions with the greatest decrease in production are also concentrated in asia. In 2003 the total global production capacity of polystyrene is 14 million 260 thousand tons / year, production of 10 million 801 thousand tons, one of North America's production capacity of 3 million 252 thousand tons / year, accounting for about 22.8% of the world's total production capacity of polystyrene; the output is 2 million 513 thousand tons, accounting for about 23.3% of total world production in South America; the production capacity of 666 thousand tons / year, total production capacity in the world 4.8%; production of 401 thousand tons, accounting for about 3.7% of total world production in Western Europe; the production capacity of 2 million 954 thousand tons / year, accounting for about 20.7% of the world's total production capacity; the output is 2 million 627 thousand tons, accounting for about 24.3% of total world production in Northeast Asia; the production capacity of 4 million 892 thousand tons / year, accounting for the total production capacity of the world 34.3%; production of 3 million 738 thousand tons, accounting for about 34.6% of total world production in Southeast Asia; the production capacity of 973 thousand tons / year, accounting for the world Has a total production capacity of 6.8%; production of 715 thousand tons, accounting for about 6.6% of total world production; in other parts of the production capacity of 1 million 525 thousand tons / year, accounting for about 10.7% of the world's total production capacity; the output is 807 thousand tons, accounting for about 7.5% of the world's total output.

The total consumption in 2003 World polystyrene was 10 million 889 thousand tons, of which consumption in North America was 2 million 505 thousand tons / year, accounting for about 23% of the world total consumption of polystyrene; consumption of South America is 445 thousand tons / year, accounting for about 4.1% of the total world consumption; consumption in Western Europe is 2 million 269 thousand tons / year, accounting for the total consumption 20.8%; consumption in Northeast Asia is 4 million 92 thousand tons / year, accounting for about 37.6% of consumption; consumption of Southeast Asia is 498 thousand tons / year, accounting for about 4.6% of total consumption; consumption in other areas is 1 million 80 thousand tons / year, accounting for about 9.9% of total consumption. Thus, the production and marketing of polystyrene in North America and South America are basically balanced, while Western Europe has a slight surplus, while Northeast Asia still needs to rely on imports to make up for deficiencies.

Polystyrene in the world is mainly used in the production of packaging containers, daily necessities and electrical / electronic 3 major industries. The consumption structure of polystyrene in different parts of the world is different. North America is about 9% for electrical / electronic industry, 57% for packaging containers, 34% for other Western Europe; about 15% for electrical / electronic industry, 48% for packaging containers, 37% for other aspects; Northeast about 49% for electrical / electronic industry, 20% for packaging containers, 31% for their; about 63% China for electrical / the electronics industry for 7% containers, 30% for other aspects of.