孟加拉采购需求：植物提取物

I'm looking to source menthol crystals and would like to place an order for 200 kg to be shipped by air to Dhaka, Bangladesh. The shipping address will be Ayat Enterprise in Dhaka. Please provide me with your best pricing, lead time, and any available specifications regarding the product. Additionally, I'd appreciate it if you could include details on payment terms and any relevant certifications or quality assurance measures you follow. It's essential for us to ensure the quality of the product meets our standards. Looking forward to your prompt response on this inquiry.