In 1998 the output of ABS and PVC reached 97.8kt and 1546kt respectively, with the consumption of 1140kt and 3050kt. It is estimated that the domestic demand for ABS and PVC will reach 1250kt and 3200kt respectively.
Temporary situation of Chineese cement industry and the cement market relations with national economy,GDP and fixed asset investment etc, were illustrated in this paper. A reasonable prediction of China cement consumption amount was given, and the author believes that Chinese cement industry will realize its aim of "from large to strong".
The global total consumption of mythyl ethyl ketone in 2004 was about 900 kt/a,with a production capacity of 1 300 kt/a,and it can be anticipated that by 2007 the market of methyl ethyl ketone will be overstocked.
It is forecasted that the total consumption of butyl rubber in China will reach about 140kt/a in 2005, 210kt/a in 2010. According to the status and existed problems in the production of butyl rubber in China, some development suggestions were put forward.
The sulfur output worldwide in 2003 was 44. 78 Mt, and the total consumption was 42.42 Mt. It was predicted that sulfur output would grow steadily at an annual rate of 2. 5% by 2010. In 2003 , the sulfur output of China was 700kt, import quantum was 4,900kt, apparent consumption was 5 ,610 kt.
A direct method in optimal portfolio and consumption choice
In this paper, we use a direct method to solve the optimal portfolio and consumption choice problem in the security market for a specific case, in which the utility function is of a given homogenous form, i.e.
An optimal investment/consumption problem with higher borrowing rate
In this paper, optimal investment and consumption decisions for an optimal choice problem in infinite horizon are considered.
this paper gets the optimal consumption and optimal investment in the form of with .
The production of sulphur-in-all-forms ammounted to 4.57Mt in 1987. By 2000. annual consumption is estimated to be in excess of 8.00Mt. Pyrites and non-ferrous smelter gases will remain to be the main sulphur resource for a long time in China for their abundant reserves. Phosphogypsum and flue gas from power plants burning high-sulphur coal will be the vast potential resources. Recovery and utilization of them can obtain valuable sulphur and eliminate environmental pollution.
The plastics industry in China has been developing very fast. The average annual rate of growth from 1980 to 1991 was 11% , and the production capacity of plastics attained 3.94 millon tons with the output of 2.84 millin tons in 1991. The consumption of plastics is increasing, with 3.81 million tons in 1991. It is estimated that the consumption will achieve 4.65 million tons and the output will reach 4.25 million tons in 1995.
PC is widely applied to various fields of the national economy because of its excellent properties. PC plays an important part among the five engineering plastics, and, its production and consumption are rapidly growing.Though the domestic production and consumption of PC are limited at present, the potential market for PC cannot be ignored. Stepping-up the application of PC is one of the important tasks for developing our chemical and petrochemical industries.