Modern Eirini d'Eyriny written doctoral dissertation in 1721 on the cover in 1712, the Greek physician Eirini d'Eyriny Swiss Val de Travers discovered huge reserves of bitumen mine. At first he just interested in the medical use of asphalt. However, due to the asphalt as an engineering material characteristics of the fine asphalt factory, he eventually wrote his thesis in 1721 "on the asphalt of the doctoral thesis" (Dissertation sur L'Asphalte ov Ciment Naturel) and begin to lay the foundation for the study of modern asphalt technology. After three hundred years (1712 Year - 1986), asphalt, bitumen by I do not know how much is located in Val de Travers total length of over 100 kilometers of the intricate maze of mine tunnels, are mined and sold around the world. Archaeological research found that asphalt use the classical period, as early as the early 1200's classical period of the former, people have started to use natural asphalt bitumen wholesale, in the production of weapons and tools used asphalt as decorations, add color to carvings. Especially in the Mesopotamia region, due to the natural asphalt implication sufficient amount of bitumen is widely used. Sumerian people living there are covered with natural asphalt on the outside of the vessel and the ship. In addition, they have begun to make use of natural asphalt binder in the clay. Asphalt low-cost, three-level 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.