Contraindication things when use the vital injector

Many beauty salon and beauty center and hospital use the vital injector now to inject healthy liquid.
But what should attention when use the vital injector 1 and also the vital injector 2.
1. During operation, avoid the internal residual liquid flows into the machine.
2. Long time no operation, check the machine regularly, especially in the winter.
3. Regularly removing drug residues in the Negative pressure channel.


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