南非采购需求：中国碳粉，中国碳粉制造商，中国碳粉q7553a，中国碳粉，惠普碳粉，惠普通用

I'm looking to purchase a substantial quantity of black and color HP toner powder. Please provide detailed information on your available stock, including pricing, minimum order quantities, and lead times for delivery. Additionally, I'd appreciate it if you could send over any relevant certifications or specifications for the toner products. This will help ensure that the quality meets our requirements. Looking forward to your prompt response!