美国采购需求：99硼化镧，购买硼化镧，cas 12008-21-8，高纯硼化镧，lab6，硼化镧

I'm currently exploring new suppliers for LaB6 powder and would like to gather more information about your product offerings. Specifically, I'm interested in the stoichiometry of your batches, as our specifications require a B/La ratio of 6.1 +/- 0.1. It's crucial for us to ensure that your material aligns with these parameters. Could you let me know if you can meet this specification? Additionally, if you have specification sheets available for your lots, I would greatly appreciate it if you could share them. This information will be very helpful as we evaluate potential suppliers. Thanks for your assistance!