Balcatta-based metallurgical and mineral testing equipment supplier Ammtec Ltd has officially taken a majority stake in US-based resin producer Purity Systems Inc, after increasing its shareholding by 20 per cent.

Balcatta-based metallurgical and mineral testing equipment supplier Ammtec Ltd has officially taken a majority stake in US-based resin producer Purity Systems Inc, after increasing its shareholding by 20 per cent.