Now our asphalt industry has entered a large-scale, centralized stage of rapid development, people's understanding of asphalt are increasingly familiar with, not only because of the large amount of asphalt, but also very broad Shandong pitch, whether it is a small village street , the city avenue, or can not get away from the use of high-speed asphalt, bitumen recovery so people at the mouth became very popular topic, especially in the mouth of a man, some people put recycling asphalt as a career, or even people because bitumen recovery and fortune too! archaeological study of the classical period found that early as the first low-cost bitumen early classical period in 1200, people have begun to use natural asphalt asphalt factory in the production of weapons and tools as decorations pitch , 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 use | asphalt | Chemical offers three levels from Jinan Chemical Co., Ltd. three levels. Jinan three ping Chemical Co. (www.sanpinghuagong.com) strong, credible, in Jinan, Shandong chemical products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead three levels of chemical into the brilliant and you work for a better future!