Why are product prices more and more expensive in 2021?
2021-04-19PPI：Producer Price Index，The production price index is an index that measures the trend and degree of changes in the ex-factory prices of industrial products, and is an important economic indicator that reflects the price changes in the production field during a certain period.
What are power, voltage, current and resistance?
2020-05-16This paper introduces the concepts of power, voltage, current and resistance.
Key points of regulator purchase
2020-05-12Understand and master the key points of the purchase of regulators, can help us to buy more suitable for their own regulators.
Is it really necessary for the average family to use voltage regulators?
2020-05-05This paper introduces the necessity of using household voltage regulator.
Inverter(-)
2020-04-25This paper introduces the function of inverter and its main objects and scenarios.
What characteristic does PVC have, action?
2020-04-23This paper introduces the characteristics, functions and advantages of PVC material.