沙特阿拉伯采购需求：51056-13-9，聚乳酸，聚乳酸-2-磷酸酯，聚乳酸-3-磷酸酯，聚乳酸-4-磷酸酯，聚合物

Dear Supplier, I am currently working on a research project and am interested in acquiring a couple of specific polymer materials. I would like to request a quotation for a total of 20 grams of polymer A with a hydroxyl end group and an approximate molecular weight of 5000, and 10 grams of polymer B, which also should have a hydroxyl end group and similar molecular weight. Please provide your pricing and lead time for these items at your earliest convenience. Your prompt response would be greatly appreciated as it will help me in planning the next steps in my research. Thank you!