Chemical processing industry plays a pivotal role in the economy of a country, as chemicals are required in every sphere of our lives. This book covers chemical processing of dyes, pigments, drugs and pharmaceutical products, fermented products, agrochemicals, explosives, polymers, Period II and III chemicals, chemicals, sugar, coatings, starches, soaps and detergents, paper, pulp, glass, and cement. It includes sources of natural materials, collection process, purification, and extraction of different chemicals from natural materials like petroleum, coal and ores from the Earth. It includes manufacturing details of C1 to C4 and aromatic compounds obtained from natural materials. The book covers both traditional and modern sectors of the chemical processing industry. It provides knowledge on the properties of the chemical and manufacturing process (such as raw materials, chemical reactions, quantitative requirement, flow sheet diagram, procedure) and its uses. The book is based on the author's expertise and has been developed with an awareness of the quantitative requirement for manufacturing chemicals. Data has been collected from industry, thus it will be useful to industry personnel, research groups, academicians and institutional organizations.