巴基斯坦采购需求：荧光增白剂、紫外线吸收剂、抗氧化剂

I'm looking for details on sodium meta nitro benzene sulfonate, specifically regarding pricing, availability, and any bulk order discounts you may offer. Please provide your current stock levels and lead times for delivery. Additionally, I'd appreciate any information on the product's specifications, including purity levels and packaging options. If you have safety data sheets or other relevant technical documents, please include those as well. Your prompt response would be greatly appreciated!