美国采购需求：天然精油、卡斯蒂利亚皂、护手霜、护肤品

I'm reaching out to inquire about the sources of your vitamin E oil. I've recently purchased some and have concerns regarding its origin. Transparency around sourcing is important to me, and I would appreciate it if you could provide more detailed information about the specific plants used in your production. Additionally, it would be helpful to know how you ensure the quality and authenticity of your vitamin E oil. Understanding your sourcing practices will greatly assist me in assessing the product's reliability. Looking forward to your prompt response so I can proceed with my purchasing decisions.