越南采购需求：Opc、Opc 鼓、有机光导体、带齿轮的 OPC 鼓、OPC 鼓供应商、碳粉

I'm looking to source OPC drums for an upcoming project, and I need some information to assess your offerings. Specifically, I'd like to know about the available models, their specifications, and pricing details. Additionally, I'm interested in understanding the minimum order quantities, lead times, and any bulk discount options you might have. Could you also let me know about the materials used, compatibility with different printers, and any warranty or after-sales service you provide? It would be great to receive product samples if available, as it would help in making a more informed decision. Looking forward to your prompt response so we can move forward quickly. Thanks!