[Sneap] Can anybody help me in finding the addresses of some companies producing SF6?

[Davide]

Dear Sneap community,
Can anybody help me in finding the addresses of some companies producing 
SF6? Actually I found out only three:
* Solvay FLUOR GMBH Germany
* LRICI China
* SIAD  Italy
but, in order to place the order, due to administrative rules, I need 
two more names.
Thank you so much in advance
Sincerly yours
Davide Carlucci