1810 asphalt, 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 attempt asphalt role, 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 bitumen wholesale, shortly after such developments to almost all major cities in Europe. Subsequently, the tough asphalt Ma Ti butter invention; 1842 in Innsbruck, Austria, Shandong asphalt, pouring asphalt was invented and successfully applied shortly after the highway construction. Based asphalt concrete with similar characteristics, 1853 by the Léon Malo proposed the concept of asphalt concrete. In order to obtain a sufficient compression ratio, in 1876 people began to use the method of compression rolling asphalt concrete. Shandong pitch, three-level chemical quality assurance (certification), three flat asphalt provided by Jinan Chemical Co. 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.