Gold Refining Machine by Aqua regia
Balestri Technologies S.r.l.
0:00 / 0:00
Gold Refining Machine by Aqua regia
9 170 просмотров · 11 л. назад
Balestri Technologies S.r.l.
2,09 тыс. подписчиков
9 170 просмотров · 11 л. назад
A gold refining process by Aqua regia method performed by Balestri Technologies's machine.