[Huayou Cobalt's Indonesian nickel joint venture began trial production] Huayou Cobalt said on Wednesday that it had achieved its first trial production at a smelting joint venture in Indonesia that produces cobalt and nickel used in (EV) electric vehicles. PT Huayue, a joint venture with Castle Peak Holdings and Luoyang Molybdenum, is the second of many closely watched projects in Indonesia to reach trial operation.