Clothing, toys, etc. Russia is rich in natural resources, with a wide variety, huge reserves and high self-sufficiency rate. The reserves of petroleum, natural gas, coal, iron, gold, copper, lead, zinc, nickel, cobalt and potassium salt are among the highest in the world, with a solid industrial base and complete departments. Heavy chemical industry occupies a prominent position, but the development of light industry is relatively backward, so it is impossible for China to import Russian clothing and toys. Light industry is opposite to heavy industry, and it also crosses each other. It mainly refers to the industrial sector that produces means of subsistence, which is closely related to daily life, such as food, tobacco and alcohol, household appliances and so on.