English 
Japan
03/18/2020
The SMT Tombstone is that after reflow soldering, one end of the component is soldered to the PCB pad, and the other end is not soldered for some reason. And it is obliquely or upright at one end of the pad. Visually, it stands on the PCB like a tombstone, so we use the word “Tombstone” to describe this defect phenomenon.
03/13/2020
PCB corrosion is actually an oxidation process that occurs when oxygen is combined with metal. During this process, the PCB metal surface will rust and cause the metal to peel off and lose its valuable chemical properties. Since the main material of the printed circuit board is copper clad board, that is to say, the PCB is mainly composed of metal, and the PCB is exposed to oxygen for a long time, so the PCB always faces the problem of corrosion.
03/11/2020
Heating clothes in winter is very popular. Today I will introduce the classification and performance of heating elements in heating clothes. The heating element is the heart of heating clothes, quality and performance are the key.
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