Chemical manufacture includes those industries active in the production of petrochemicals, agrochemicals, pharmaceuticals, polymers, paints, oleochemicals etc. Chemical processes are used, all-in-one chemical reactions to mould new substances, separations based on environment such as solubility or ionic order and distillations, in adding to transformations by heating and supplementary methods.

Chemical industries involve the processing of, or novelty in, plain materials second-hand by mining and cultivation among other supply sources, into materials and substances that are useful in front their control, or brand-new other industries. The food-processing industries are generally not included in style or fashion or vogue the session "chemical production".