All polyamides more or less tend to absorb moisture. For this reason, in using these materials, attention should be paid to their technical information in the dry state and after absorbing moisture. In practice, moisture acts as a plasticizer in polyamides, reducing the tensile modulus and increasing the impact resistance. Due to the sensitivity of polyamides in absorbing moisture of these materials before the injection process, they need dehumidification. In addition, due to the point increase of temperature in the mold and the effect of water on oxidation, the produced parts will have weaker mechanical properties due to material degradation. Therefore, due to the importance of moisture absorbed by polyamides, it is recommended that in order to maintain mechanical properties, in a covered environment with a relative temperature of 15-20 degrees Celsius and kept on smooth surfaces.