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WHY Dr.PGA
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Nitrogen Purging
An ideal preservative for high potency skin care products, which often come in liquid form.
Winston Medical Supply Co. is the only pharmaceutical factory
in possession of medical-grade nitrogen air production system in Taiwan.
Dr. PGA uses medical-grade, 99.9% pure nitrogen in its product packaging.
Regular testing of nitrogen gas concentration is conducted
to ensure product quality and conformance to specifications.