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The main indicators affecting the performance of insulating materials are as follows:1. Insulation resistance and resistivityResistance is the reciprocal of conductance, and resistivity is the resistance per unit volume. The smaller the conductivity of the material, the greater the resistance. The r


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2022-02

Nanjing Hengfeng packaging Co., Ltd ​wishes you a happy Spring Festival!

The Spring Festival is the beginning of the year and the traditional festival. It is commonly known as new year, new year, new year’s day and so on. The Spring Festival has a long history, which evolved from the worship of praying for new year in ancient times. All things are based on heaven and peo