哥伦比亚采购需求：包

I'm looking to purchase large quantities of mailing packing courier post bags. Specifically, I'm interested in bags suitable for various shipping purposes, with durability and secure sealing as top priorities. Could you please provide me with your product specifications, pricing details, minimum order quantities, and lead times? Additionally, any information on customization options or bulk discounts would be appreciated. Looking forward to your prompt response!