Cpu-ram and hdd.
Hard disc, motherboard scrap.
zinc oxide 68% and above from Walez Kiln process (Unwashed) packing in Bags analysis : CL : 8.44%, F: 378 mg/kg, Cd: 2370 mg/kg Fe: 7404 mg/kg Zn:68.1% Acid Digestion Done,Bomb combustion: Done, Fusion : Done.