Light industry is an industry that mainly provides consumer goods and manufactures hand tools. In research, as mentioned above, heavy industry and chemical industry are often called heavy chemical industry. \x0d\ is defined as: \x0d\ refers to the industry that produces consumption materials. "x0d" mainly refers to the industrial sector that produces consumption materials. Such as: food, textile, leather, paper, daily chemical, culture, education, art and sporting goods industries. \x0d\ Light industry mainly refers to industrial sectors that provide consumer goods, including: ① industrial sectors that use agricultural products as raw materials. Such as the textile and sewing of cotton, wool, hemp and silk, leather and its products, pulping and papermaking, food manufacturing and other industries; (2) Take non-agricultural products as raw materials. Such as daily metal, daily chemicals, daily glass, daily ceramics, chemical fiber and its fabrics, matches, household wood products and other industries. Light industrial products are mostly consumer goods, and some of them are used as raw materials and semi-finished products, such as chemical fiber, industrial cloth, paper, salt and so on. \ x0d \ x0d \ heavy industry refers to the industry that provides the material and technical basis of the main means of production for various departments of the national economy. \x0d\ Heavy industry is the symmetry of "light industry", which refers to an industrial system based on energy and raw material industries, with high-end durable consumer goods, equipment manufacturing, electronic and electrical machinery industries and chemical industries as the main bodies. Including metallurgy, machinery, energy (electricity, oil, coal, natural gas, etc. ), chemistry, building materials and other industries, it is the basic industry that provides technical equipment, power and raw materials for various departments of the national economy. It provides raw materials, fuel, power, technical equipment and other labor materials and labor objects for all sectors of the national economy (including industry itself), and is the material basis for realizing social reproduction and expanding reproduction. The development scale and technical level of a country's heavy industry is an important symbol of its national strength.