MELBOURNE : Nickel Industries is inviting electric vehicle and battery makers including Tesla to its Indonesian facilities as it seeks potential investors to the plant, the Australian company's chief executive said on Monday. The producer of nickel pig iron is expanding into high purity nickel for the EV industry and is building a $2.3 billion plant in Indonesia's Morowali that will supply products such as nickel sulphate, matte and mixed hydroxide precipitate (MHP). Nickel Industries owns a 55 per cent stake in the plant, with China stainless steel maker Tsingshan holding the rest.