α-Phase Silicon Nitride (Si3N4) Powder

We would like to purchase the sample of following product according to the terms and conditions stipulated below.
If you can supply the following product sample, please provide me your price quotation and certificate of analysis of the product ASAP.
If the sample will be acceptable, we will consider purchasing it for the raw material of our mass production.
α-Phase Silicon Nitride (Si3N4) Powder : Cas No. 12033-89-5
* α-Phase content: >90wt% (Preferably > 95wt%)
* Metal impurity concentration: Fe 10ppm)
Al< 3ppm (Preferably > 1ppm)
Ca