印度采购需求：软包装膜，软包装膜特性，卷绕膜，卷绕包装膜，卷绕膜

I'm looking for a supplier that can provide high-quality silver materials. Specifically, I'm interested in details regarding your available grades, forms, and any certifications you might have that ensure compliance with industry standards. Could you also share information about your pricing, minimum order quantities, and lead times for delivery? It's important for me to understand the options available, as I'm considering potential long-term collaboration. Looking forward to your prompt response!