Light industry Refers to industries that mainly provide consumer goods and make hand tools. According to the different raw materials it uses, it can be divided into two major categories: (1) light industry using agricultural products as raw materials, refers to the light industry that directly or indirectly uses agricultural products as basic raw materials. It mainly includes food manufacturing, beverage manufacturing, tobacco processing, textile, sewing, leather and fur production, paper making and printing industries; (2) light industry using non-agricultural products as raw materials, refers to light industry using industrial products as raw materials. Mainly includes cultural and educational sporting goods, chemical manufacturing, synthetic fiber manufacturing, daily-use chemical products, daily-use glass products, daily-use metal products, hand tools manufacturing, medical equipment manufacturing, cultural and office machinery manufacturing and other industries.
Heavy industry refers to the main means of production for the various sectors of the national economy to provide a material and technical basis for the industry. According to the nature of its production and product use, can be divided into the following three categories: (1) extraction (logging) industry, refers to the exploitation of natural resources, including oil mining, coal mining, metal mining, non-metallic mining and timber harvesting and other industries; (2) raw materials industry, to the various sectors of the national economy to provide the basic materials, power and fuel industry. It includes metal smelting and processing, coking and coke, chemistry, chemical raw materials, cement, man-made boards, and electric power, petroleum and coal processing industries; (3) Processing industry, which refers to industries that reprocess and manufacture industrial raw materials. Including equipment for all sectors of the national economy, machinery and equipment manufacturing industry, metal structures, cement products and other industries, as well as for agriculture to provide the means of production such as fertilizers, pesticides and other industries.
Ningxia Shizuishan City, the main industries are coal mining industry and steel processing industry, etc.. Therefore, Ningxia Shizuishan City should be considered a heavy industrial base. But compared with the heavy industrial base in the northeast and the middle and lower reaches of the Yangtze River, it seems to be not considered a heavy industrial base.