Опубликовано в "Бизнес, Бизнес", язык - English. 5 страниц.
The Global Coal Tar Market size on the basis of product type spans birch tar, coal tar, pine tar and pitch among others. The production of tar is generally done with the help of a wide range of natural materials via the process of destructive distillation. The mining of tar can be done from petroleum, coal, peat and wood. It is generally a combination of free carbons as well as hydrocarbons. Products that resemble the tar can be extracted from hydrocarbons. Еще
