Our main products include the 3H® AC Long - Distance Transmission Intelligent Relay Power Supply series, UPS (Uninterruptible Power Supply) series, EPS Emergency Power Supply series, APF Active Power Filter series, Frequency Conversion Power Supply series, Intelligent voltage regulator power supply and other series of AC/DC power supplies, photovoltaic inverters, ESS power supplies, emergency telephones and intercom broadcast systems, wireless coverage systems, and intelligent IoT management boxes.

Among them, the 3H® AC Long - Distance Transmission Intelligent Relay Power Supply is an intelligent high-tech product series specially designed to solve the problem of low-voltage long-distance power supply. It integrates DSP chip control technology, digital sampling technology, closed-loop adaptive control technology, and zero - current - crossing stepless switching technology. It has obtained a number of national invention patents, utility model patents and control software copyrights. It perfectly solves the pain points of long - distance transmission in the low - voltage power distribution field, completely overcomes the problems of power loss and low voltage in the "last mile" of the low - voltage power distribution field, can greatly save investment and power consumption, and is a safe, efficient, precise, environmentally friendly and intelligent high-tech product, leading the industry in the technical field.

The 3H® AC Long - Distance Transmission Intelligent Relay Power Supply series products can be widely used in rail transit, bridges, tunnels, municipal roads, highways, utility tunnels, power grid renovation in rural areas, petrochemical industry, airports, ports, parks, tourist attractions, communications, national defense, scientific research, industrial and mining enterprises, construction sites, etc., and have won high praise from customers.

Our traditional products such as the UPS Power Supply, EPS Fire-Fighting Emergency Power Supply, APF Active Power Filter series, Frequency Conversion Power Supply series, and Voltage Stabilizer series have achieved a leap in becoming smaller in size, better in performance and higher in cost - performance through continuous improvement by technicians, and are deeply loved by new and old customers.

The company has a group of high - quality, professional and capable technical R & D elites. Its products have obtained CE certification and ISO9001 product quality certification, and possess a number of invention patents, utility model patents and control software copyrights. All products have complete independent intellectual property rights.

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