1) The injection point of gas is generally about 90% of the filling cavity of the injection molding machine, and the filling state must be coordinated with the nitrogen injection action, while considering the gas's boosting effect.

2) After gas injection, it is necessary to prevent leakage from the injection point nozzle and the tail of the product.

3) After gas enters the colloid, it will delay the direction with the least resistance. For example, thicker sections in plastic parts.

4) The tail pressure of gas holding should be discharged at a low pressure.

5) When plastic is cooled and formed, its pressure is controlled by gas instead of injection molding machine.

6) When gas does not blow smoothly into the middle of the product, plastic parts will produce blowing marks.

7) The gas inside the plastic must be discharged into the atmosphere or recycled before molding.

8) When plastic is cooled, plastic products will experience shrinkage, which is compensated by the pressure of the gas.

9) To prevent gas leakage in the barrel of the injection molding machine, it should be appropriately added between the low pressure holding time and the glue melting delay time, which is approximately 60% of the working cycle of the injection molding machine

10) The purity of nitrogen must be greater than 99.99%.

11) Nitrogen is transported to the mold through a booster and through a dedicated 400 bar high-pressure pipeline.