1. Check the certification mark.Products that have obtained compulsory certification shall be marked with the certification mark, namely “CCC” mark, otherwise, they shall be regarded as...
The long-term allowable cable current rate refers to the current value when the current in the cable passes through, and the temperature of the cable conductor reaches the long-term allowable opera...
Every family that buys a new house needs decorating. How to choose fitment wire?
Water and electricity transformation is a very important part of the family decoration, and water and electricity tr...