Principles and operation of the GB modified bitumen, modified bitumen manufacturer, Hebei Xin Yuan professional supplier of modified asphalt | - Xin Yuan, Qingyuan County, refractory Sales Co., Ltd. was established in 1999, has been adhering to the "integrity management, practical work," concept, by the support and trust of our customers, the monthly throughput of 5000 tons or more, welcome new and old customers to negotiate. Products: medium temperature pitch, the capacitance of magnesia, industrial naphthalene, high-temperature asphalt powder, graphite regeneration electrode. 
 Medium temperature asphalt tar distillation residue part of the production rate accounted for 54 to 56 percent of the tar, which is composed by more than the tricyclic aromatic compounds and oxygen, nitrogen, sulfur-containing heterocyclic compounds and a small amount of polymer carbon material. Asphalt component of the molecular weight of between 200 and 2000 up to 3000. Medium temperature pitch is classified according to the softening point. The softening point of 65 ~ 90 ° C for medium temperature pitch.