赞比亚采购需求：酶、纺织助剂

I'm looking to source cellulose and RDP for our upcoming projects. We're interested in understanding the different grades and specifications you offer for these materials. It would be great if you could send over your product catalog along with pricing details and any bulk order discounts available. Additionally, please include information about lead times for delivery and any minimum order quantities that we should be aware of. We're keen on establishing a long-term partnership, so any details regarding quality assurance measures and certifications would also be appreciated. Looking forward to your prompt response!