high quality pyrite powder for brown glass industry

1.high quality pyrite powder for brown glass industry S 48%min Fe 43%min  

Dear Sir or Madam,

We are one of the biggest pyrite products manufacturer in China.Our main products are high quality ferro sulphur/pyrite/FeS2 lumps and its powder .It is used in glass industry for the making of brown glass.The quality and the size as follows:

Pyrite powder(FeS2):

Quality :

S               48%min;

Fe              43%min;

H2O              1%max.

Size:100mesh X down;200mesh 90% down;325mesh 90%min down;