25g SILVER from contactor NC2-185
40:34
Silver Extraction From Silver Plated Scrap || Silver Recovery from plated stuff ||
12:09
29,59 g de oro de los relés RES 9 y RES 22
15:10
CPU Sockets Gold Recovery | Recover Gold From Computer Motherboard | Gold Recovery
16:27
what's inside a big breaker?.....
23:56
การสกัดเงิน Silver Recovery From Contacts
19:17
Fundición de PCB de telecomunicaciones para oro | Placas de circuito impreso de 15 kg
30:35
contactores funcionamiento y mantenimiento
19:59