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This paper introduces the concepts of power, voltage, current and resistance.

Understand and master the key points of the purchase of regulators, can help us to buy more suitable for their own regulators.

This paper introduces the necessity of using household voltage regulator.

This paper introduces the matters needing attention of inverter.

This paper introduces the working principle of inverter.

This paper introduces the function of inverter and its main objects and scenarios.

This paper introduces the characteristics, functions and advantages of PVC material.

This paper introduces the function difference and working principle of voltage protector and surge protector.