![SO4](/sites/default/files/styles/medium/public/bn-di-company/so4.png?itok=yE2tsiWG)
Piper Preston Pty Ltd, trading as SO4, aims to become a globally significant exporter of premium quality Sulphate of Potash through the development of a potassium rich salt lake in the Goldfields region of Western Australia. SO4 acquired the Lake Way project from Salt Lake Potash in 2022. SO4 is a subsidiary of Czechia-based company Sev.en Global Investments.