In the following years, a variety of application is extended to seal asphalt roof waterproofing layer. At the time, reinforced with asphalt pavement is still expensive that only the rich can use private road asphalt reinforcement surface. Asphalt was first used on the bridge as an asphalt pavement is mounted on a wooden bridge in Sunderland. In the early 20th century, asphalt, along with engineering material prices to continue to decline, asphalt show more sense. In 1907, the first asphalt members in the United States put into use. 1914, in order to get a better index of refraction, people in Berlin for the first time to see the racing lane asphalt road asphalt Shandong, which is a cross-sectional schematic view of an ornate Babylon road. Burnt asphalt applied over asphalt brick low-cost, flat on the top of the slate gorgeous way of a cross-sectional schematic view of Babylon wipe the surface of the asphalt. This magnificent road can be regarded as the pioneer of modern asphalt concrete road. In the thousand years of time, the asphalt was expanded range of applications, so that in the near to Mesopotamia, India and Europe, natural asphalt as a sealing material for the baths, boats, drains, toilets and embankments. In the seventh century BC Assyrian empire and the Babylonian Empire asphalt manufacturers, asphalt has been put into use in road projects. Then, as the seams of asphalt material and application material to decorate and reinforcement Road. Thereafter, the same pitch as the cement binding agents are used for the construction of China's Great Wall and the sealed engineering Hanging Gardens of Babylon. Asphalt uses 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.