Three in one hole paste materials usually include the following categories:

　　1, the substrate: the substrate of the three-in-one hole paste material is usually polyimide film (PI) material or polyamide film (PA) material. These materials have high heat resistance and chemical stability, and can adapt to high temperatures and harsh environments.

　　2, adhesive: the adhesive of the three-in-one hole paste material is usually acrylic adhesive or hot melt adhesive. Acrylic adhesive is a very common adhesive with good adhesion and temperature resistance, while hot melt adhesives usually need to be melted at high temperatures to achieve bonding effect.

　　3, conductive materials: three-in-one hole paste materials also need to have a certain conductivity in order to facilitate the connection between electronic devices. Conductive materials can be made of silver glue, copper foil and conductive glue, etc., for making wires, leads and contact points. The above are several common materials in the three-in-one hole paste materials, different manufacturers and different products may be different. In order to ensure the correct use and fitting effect of the material, the brand and specification materials with qualification certification should be selected to ensure that they meet the specifications of the product.