What is thermal grease? How should one use thermal grease properly?

What is thermal grease?

Thermal grease has another name, called thermal paste. This heat dissipation paste is made of organic silicone and some other materials with good heat resistance and thermal conductivity into a paste-like substance. Because the materials used in it have good heat dissipation, this silicone material is made It is used in some electronic environments that require heat dissipation, such as: computers, transistors, electronic tubes, etc., thereby ensuring the stability of the performance of electronic components to a certain extent.