Commonly used in the LED industry the glue types are: silicone, epoxy resin, silica gel which is also called silica gel, which belongs to the high active adsorption material, but also has a certain degree of heat resistance, dielectric properties of silica gel, suitable for use in the LED lamp industry; and epoxy resin and epoxy can be resin, and a solvent to need curing epoxy resin, generally can be divided into soft and hard rubber. The difference between LED beads above two kinds of glue dispensing machine is in essence, so before using glue properties also need to choose. Understand LED lamp used to glue type, take a look at the LED lamp dispensing machine need to pay attention to problems in using. After selecting the appropriate dispensing valve and dispensing needles, according to the requirements in the debugging of LED beads dispensing glue dispensing pressure, if the glue dispensing needle choose smaller, smaller inner strength, the back pressure debugging small dispensing. On the contrary, if the amount of glue needed is larger, the glue needle with larger inner diameter can be selected, and then the pressure of the glue can be adjusted. However, when adjusting the pressure, it is necessary to adjust the viscosity according to the viscosity of the glue used, so that the glue can be easily done.