美国采购需求：闪亮硫化黑，硫化黑 200，硫化黑 220%，硫化黑 b，硫化黑蓝，硫化黑 br

We are currently seeking information and pricing for a specific type of dye known as Sulphate Black, with a concentration of around 240%. Please provide details on your available products that fit this description, including their specifications, packaging options, and any minimum order quantities. Additionally, we would appreciate insights into your lead times for production and shipping, as well as any certifications or quality assurance processes your products undergo. If you have samples available for testing, please let us know how we can arrange to receive them. Looking forward to your prompt response!