1. The thread is expired. 2. Oxidation because opened the aluminum bag with normal temperature for storing. 3. The needle problem. 4. The drying problem when production. 5. The operating problem.
Keep threads within normal temperature 18 ℃～25 ℃ Keep away from sunshine and with normal temperature, if not, threads would be oxidized. Please don’t keep threads in refrigerator. With big different temperature, it is easy to form frost, which will make threads easier to be oxidized. It would be better to use them within one week once you open the foil bag.
Non-surgical face lift with short recovery time.
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