美国采购需求：单方精油、香薰精油、扩香精油混合物、精油套装、植物提取物精油礼盒、基础油

I am interested in sourcing rose essential oil and would like to know more about your offerings. Specifically, I'm keen on understanding the different grades of oil you have available, including any organic or therapeutic-grade options. It would be great to get details on the extraction methods used, as well as any certifications you might hold that ensure the quality of the product. Additionally, could you please provide information on packaging options, minimum order quantities, and lead times for delivery? Pricing is crucial for our decision-making process, so any details on bulk purchasing or volume discounts would be appreciated. I'd also like to know your policies on samples for quality assessment before placing a larger order. Looking forward to your prompt response!