法国采购需求：砷5n、砷6n、砷7n、砷99.999%、砷99.9999%、砷99.99999%

I hope this message finds you well. I'm currently conducting research at Sorbonne University, and I'm in urgent need of gray arsenic powder with a rhombohedral crystal structure. I found your listing online, but it lacks specific details regarding the crystalline characteristics. Could you please provide the crystal structure information, such as X-ray diffraction (XRD) data or any other structural characterization? This information is critical for our project. I appreciate your assistance and look forward to your prompt reply. Thank you!