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This vial lasts 33 doses

Gentle swirling is always the preferred method

We provide flexible customization services including: 99% pure GHK-Cu powder 0.1% / 0.5% / 1% / 5% liquid solutions Water, glycerin or butylene glycol solvent systems Preservative system customization GHK-Cu blended ingredients (such as HA, Centella asiatica, Ectoin) Private label and customized packaging Our technical team can assist with formulation recommendations and stability evaluation

Solution In this example, we will first calculate the gross income after deducting the provident fund and professional taxes and finally deducting federal income taxes