孟加拉采购需求：纤维素醚制造商、供应商、羟丙基甲基纤维素、Hpmc、纤维素醚、甲基纤维素

I am looking to source some specific chemical products in the future. Please consider providing information on pricing and availability for SLS, SLES, soda, and AOS powder. It is essential for us to maintain a good stock of these materials. Additionally, I would appreciate it if you could share details about the quality certifications and any minimum order quantities required. This will help us streamline our procurement process and ensure we meet our production needs efficiently. Your prompt response would be greatly appreciated!