What is the integration development of the first, second and third industries?

The integration of primary, secondary and tertiary industries mainly includes

The integration of the first, second and third industries refers to the integration of production, processing, sales and service of agricultural products. Integration means close contact, interdependence and mutual promotion. The reason to advocate and promote the industrial integration of 123 is that this integration has many benefits. People usually care about the interests of farmers and producers. It is generally believed that the value of agricultural raw materials obtained only through agricultural production is relatively low.