We choose high quality engineering plastic PLA; PLA nozzle temperature is 170~230'C, the bottom temperature is 50~70'C; Its density is small, with good elasticity and good toughness; Good plating; No easy absorption of moisture, after unsealing and placed indoor, a year can be normal use! Easy molding, without burrs, clear bright color, the printing process without peculiar smell; Accuracy control +/-0.05mm; Oven drying, vacuum packaging and isolated from dust and moisture after the production is finished; Please avoid strong light such as sunlight irradiation for a long time, fire prevention, put in dry place, moistureproof, once opened with desiccant, please seal, so as not to be affected with damp.