Natural rock asphalt Kawakita is based molecular weight of up to ten thousand of asphaltenes as the main components, the chemical composition of carbon 81.7%, hydrogen 7.5% bitumen, 2.3% oxygen, 1.95% nitrogen, 4.4% sulfur, aluminum 1.1%, silicon 0.18 % and 0.87% other metals. Wherein the content of carbon, hydrogen, oxygen, nitrogen, sulfur, high asphaltene molecules almost every all contain polar functional groups of the above elements, so that in the rock surface adsorption of the strong force. 2013 by the tight monetary policy neutral, running from the lack of funds, part of the road construction project was shelved, resulting in a limited 2013 asphalt demand. However, the construction period of road construction in general 3--4 years asphalt content, and the laying of asphalt are mainly concentrated in the end of construction of the building, so Shandong asphalt, "five" last two years, the asphalt demand situation will gradually improve. Asphalt or road engineering cement pavement structure widely used material, which is different from the composition of mineral materials according to the proportion of asphalt pavement can be built with different structures, highways applied more widely. Bitumen prices, the three levels of chemical quality assurance (online consultation), bitumen provided by the Jinan Chemical Co., Ltd. three levels. Jinan three ping Chemical Co., Ltd. (www.sanpinghuagong.com) Shandong Jinan, chemical products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Three-ping Chemical leadership with the staff warmly welcome all inquiries negotiations to create three levels of chemical better future.