The relay is a new type of relay that has developed in recent years and is also an automatic switch. Like other electromagnetic relays, it plays an automatic role in connecting and disconnecting circuits. The difference is that the normally closed or normally open state of the relay is entirely dependent on the action of the permanent magnet, and the transition of its switching state is accomplished by triggering a pulse electrical signal of a certain width.

Relays are widely used in remote control, remote measurement, communication, automatic control, mechatronics and power electronic equipment, and are one of the most important control components.

In recent years, the scale of enterprises in our country has expanded rapidly and the output has soared. The annual total output of international relay manufacturers in China has reached more than hundreds of millions. The assets of private enterprises have transitioned from the stage of primitive accumulation to the stage of capital expansion, and the annual output of many manufacturers has reached more than ten million. Driven by the national space program, the business situation of state-owned enterprises has tended to improve, their investment in scientific research has increased, and their benefits have grown significantly.

According to statistics from relevant institutions, China's relay industry holds huge market potential. With the gradual implementation of industrial revitalization policies, experts predict that during the "12th Five-Year Plan" period, the demand and application fields of relays will continue to grow and expand. Traditional electromechanical relays will grow at a rate of approximately 8%, while the development rate of solid-state relays will remain at around 15%. Special relays will develop rapidly at a rate of more than 20%.

It is reported that in 2011, the application scale of relays in the OEM market was 735 million yuan, among which the application scale of relays in the machine tool industry market was 99 million yuan, accounting for 14% of the overall market and ranking first. It is expected that the year-on-year growth rate of relay market demand in the machine tool industry in 2012 will not be too large.

According to data from the National Bureau of Statistics, from January to December 2011, the machine tool industry achieved a cumulative industrial output value of 660.65 billion yuan, representing a year-on-year growth of 32.1%. The output value of product sales was 642.49 billion yuan, increasing by 31.1% year-on-year. The product sales rate reached 97.3%, a decrease of 0.8 percentage points compared with the same period of the previous year.

Recently, Siemens' new generation of relays was officially launched in Tianjin. The new generation of relays can achieve higher energy efficiency, reliability and versatility with other electrical equipment. Its innovative design can be widely applied to the requirements of conveying technology, and the application fields include automotive manufacturing, food and beverage, logistics and warehousing, and airport logistics industries.

The successful launch of the new generation of relays is of milestone significance to the enterprise, enabling Siemens drive equipment to extend from the large-scale heavy industry field to the civilian light industry field, and making the product application more extensive. The new generation of relays is equipped with an optimally designed gearbox and a brand-new, highly efficient motor, which can significantly enhance the energy efficiency of factories or systems, and improve the reliability and versatility of equipment.

The rapid and wide spread of information technology has brought relays into an era of innovation for humanity. From analog to digital, it will become the mainstream of electronic products. Relay products will continue to expand and their technology will also keep improving. The products are developing towards intelligence and modularization, and the market demand is steadily rising. The overall application has been promoted domestically.