Depending on the quantity, production is classified as follows A . Job Production (Job production or job production): Production is done according to the orders of the customers. Standardization is not adopted in it because items of different types and rules are produced in it. In this, instruments etc. are installed which can produce goods of all specifications B . Batch Production: This system depends on consumer demand. Under it, goods are produced in classes. Production of goods starts in the other class only when one class of goods is sold. The class production process is employed in the pharmaceutical manufacturing industry. C. Mass Production: This is the reverse of job production. Only certain kinds of goods are produced in this and the purpose of such production is to sell the affected goods on a large scale.