越南采购需求：纤维活性黑色染料，批发购买纤维活性染料，纺织品用纤维活性染料，织物染色溶液

I'm looking to procure black-dyed sliced fibers, specifically hyacinth fibers. Could you provide details on the types and grades of hyacinth fibers you have available? Additionally, I'd appreciate information on the dyeing process you use, including any specific treatments to ensure a deep and consistent black hue. It would be great if you could also share your pricing, minimum order quantities, and lead times for production and delivery. Understanding your capacity to handle bulk orders as well as any samples you could provide for quality assessment would be helpful too. Looking forward to your quick response!