尼泊尔采购需求：促销品、促销礼品、广告礼品、挂绳、赠品、硅胶腕带

I'm looking for a reliable supplier to provide school staff bags that are both functional and durable. Ideally, these bags should have ample storage space and multiple compartments to help staff organize their essentials easily. Materials should be high-quality to ensure longevity, and I would appreciate it if you could provide options that are lightweight yet sturdy. Additionally, I would like to know about the customization options available, such as branding and color variations. It would be great if you could also include details on your minimum order quantities, lead times, and pricing tiers based on volume. I'm eager to explore potential partnership opportunities, so any additional information you can provide would be very helpful.