巴基斯坦采购需求：甲壳素壳聚糖，壳聚糖，壳聚糖衍生物，壳聚糖液体，壳聚糖制造商，壳聚糖粉

I'm looking for chitosan, specifically focusing on its quality and sourcing options. Please provide details on the available grades, pricing, and minimum order quantities. Additionally, I'd like to know about your production capabilities and any potential customization. If you have sample packs available, I would appreciate the chance to evaluate them before making a larger commitment. Looking forward to your prompt response!