Did you know: how many kilograms does a gold tree (gold) weigh?
in vietnam, gold is calculated in units: only, quantity or tree. so how to convert these units? how much does a yellow tree weigh?What do you know about platinum - Platinum, one of the most rare metals on the planet?
platinum (or platinum, white gold) is a rare and precious metal widely used for jewelry making, catalytic converters, conductors, pacemakers, cancer medicines and magnets.