Individual supplier on rubidium &cesium

this is NAN and I am someone living in Sydney who had been introduced to provide the supply on rubidium and cesium by a representative from China. in this regard, what my question is if you are interested in learning something about it and I am going to help you go through some details about it. for example, metallic rubidium and cesium with purities of ≥99.9%, ≥99.99%, ≥99.999%, and ≥99.9999% Thanks.