In 1810, in Lyon, Ma Ti quality asphalt overlay is first applied. After ten years of development in Genoa a predecessor of modern asphalt felt and application success. Based on extensive attempts, in 1837, the process has been shown to apply asphalt on the highway project. 1839 in the Austrian capital Vienna found by re-heating method can make asphalt recycling. 1838 was the first asphalted road appears in Prussia Hamburg. In 1851, 78-meter-long section paved with asphalt surface on the road from Travers to Paris. Just 20 years later, Paris was almost completely covered with asphalt, and soon after the development of this situation almost all major cities in Europe. Natural rock asphalt Kawakita is based molecular weight of up to ten thousand of asphaltenes as a major component, Shandong asphalt, the chemical composition of carbon 81.7%, hydrogen 7.5%, low-cost asphalt, 2.3% oxygen, nitrogen 1.95%, bitumen, sulfur 4.4 %, 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. Asphalt wholesale, three ping 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.