We can supply you semi-conductive and photovoltaic materials, such as PbS,CdS. Our company can supply you Lead sulfide (PbS), Cadmium sulfide(CdS), Aluminum trisulfide (Al2S3),  germanium disulfide(GeS2), Bismuth trisulfide (Bi2S3),  antimony trisulfide(Sb2S3).