We are the leading company in China for the Pyrite export, who has the shares in the Chinese best Pyrite mountains and has been exporting the Pyrite for about 20 years.
Now we export the high quality (S:44-49%) Iron Pyrite of 500 tons and the common quality (S:35% min) Iron Pyrite of 3000 tons every month.
Our annual output of the Iron Pyrite is 1,500,000 tons for the market both home and abroad. Below for your ref is some info of our high quality pyrite, as per which we usually export to Japan, some EU countries and USA:

Pyrite
S: 44-49%
Fe: 42-44%
SiO2: 1-3%
Al2O3: 0.5% max
As: 0.15% max
Pb: 0.1% max
C: 0.2% max

Size: 10-50mm 90% min
Note: we also can produce the other sizes both in lumps (0-5, 3-10, 5-15, 10-30, 20-80mm...) and in fine powder (100, 200, 320, 400mesh...)

Packing: in 1mt PP woven bags
(or as per yr requirement)

Hope to establish the cooperation with you. Any question, pls contact me.