This is a cross-sectional schematic view of an ornate Babylon road. Burnt brick coated by a pitch before, the top of the stone flat on a cross-sectional schematic view of Babylon a beautiful asphalt road surface wipe. This magnificent road can be regarded as the pioneer of modern asphalt concrete road. In the thousand years of the time the spot pitch, asphalt pitch was expanded range of applications use, so that in the near to Mesopotamia, India and Europe bitumen, natural asphalt as a sealing material for the baths, boats, canals, toilet and embankment. In the seventh century BC Assyrian empire and the Babylonian Empire wholesale asphalt, 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. Rock asphalt is oil after deposition of up to millions of years, changes in the combined effect of heat, pressure, oxidation catalysts, bacteria and other bituminous substances generated. Commonly used as asphalt modifier. Physical characteristics rock asphalt tends to "coal." Natural rock asphalt country has proven mineral resources are mainly distributed in China's Xinjiang, Qinghai and Sichuan Qingchuan area. Green River rock asphalt mine located in northern China has a reputation as the land of abundance LONGMENSHAN region, the initial proven reserves of 300 million metric tons and prospective reserves of 10 million tons, by experts as "rare in China and the world natural bitumen ore body" reserves ranking first in the country. Asphalt, bitumen from a three-level chemical quality assurance (certified merchants) are provided by Chemical Co., Ltd. Jinan three levels. Jinan three ping Chemical Co. (www.sanpinghuagong.com) is specialized in "calcium nitrate, magnesium nitrate, zinc nitrate, magnesium sulfate, calcium sulfate, barium sulfate, ferrous sulfate," the enterprise, the company adhering to the "honesty, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Su Jingli.