Hainan Huayan CollagenTsis yog tsuas yog muab collagen raw khoom cov khoom siv, peb kuj muab OEM / ODM kev pabcuam. Peb cov khoom tuaj yeem siv dav hauv qhov ncauj haus dej, khoom noj muaj txiaj ntsig ntxiv, cov khoom zoo nkauj, thiab lwm yam.