墨西哥采购需求：食品包装，糖果袋，塑料食品袋，塑料袋，牛皮纸袋，平底

I'm reaching out to explore options for flat bottom coffee bags in various sizes including 250g, 500g, and 1kg. My primary focus is on sourcing sustainable and biodegradable materials that align with environmentally friendly practices. It's important for me that these bags not only meet functional requirements but also contribute positively to our carbon footprint. Additionally, I'd love to know more about the different features available, such as sealing methods and customization options. If you could provide pricing details and minimum order quantities for these sustainable bags, that would be great. Looking forward to your prompt response so we can potentially move forward!