孟加拉采购需求：DOP、邻苯二甲酸二辛酯、DOP增塑剂、PVC树脂、PVC树脂粉、甲酸

I'm looking to procure 550 metric tons of soda ash light with a purity of 99.2%. It's important that the product is from the Double Ring brand, as I've had positive experiences with their quality in the past. I need to ensure that the specifications are met to maintain the standards of my ongoing projects. Could you please provide me with your best pricing and lead times? Additionally, if there are any available delivery options or bulk purchase discounts, I'd appreciate that info too. I'm looking to move forward quickly, so any details you can share will help streamline the process. Thank you!