Function: improve the dimensional stability, elimination of internal stress Category:Heat treatment and Humidity treatment  1.Essence heat treatment:forcing frozen chain slack, solidifying the macromolecular chains are turning to random locations to eliminate internal stress, improve crystallinity, stable crystalline structure, improve modulus, lower elongation. 2.Humidity treatment:Will just release the product into the water, isolated from the air, preventing oxidation. Humidity conditions: 90~110℃ 4H. 3.Post-treatment: size requires more sophisticated parts, you need to make the necessary post-processing. This process is the same as the conventional procedures of heat treatment of metal products.