Chain refers to a business model in which a company controls multiple branches or brands, which are closely linked in management and form a unified planning, unified management and unified marketing network. Chain operation mode can promote resource sharing, expand the market, reduce costs and improve the competitiveness of enterprises.

In addition, chain stores are also widely used in other fields, such as chain restaurants, chain supermarkets, chain hospitals, etc., which are all sustainable business models.

Interlocking is a safety measure, which is widely used in the field of industrial automation control. This means that two or more mechanical parts, systems or equipment are physically or logically interlocked to ensure their synchronization and safety, and to prevent accidents or machine failures.

Interlocking can ensure the correct operation sequence of various systems and components, and effectively ensure the safety and reliability of work and production. At present, interlocking technology is widely used in various engineering fields to ensure the safe operation of the system.

Although interlocking and interlocking refer to the connection between multiple components or systems, their specific meanings vary according to application scenarios.

Chain is a business model, which refers to the close contact and cooperation between multiple businesses or brands to achieve the purpose of unified planning, marketing and management.

Interlocking is a safety measure, which refers to a technology adopted in the field of industrial automation control to ensure the correct operation sequence of various systems and components to ensure the safety and reliability of work.

Therefore, the application scenarios and meanings of the two are different, and they need to be selected and used according to specific conditions.