With an electromagnetic system and metal-detection systems to separate out the unwanted metal. Before the Sub will go through a second set of charcoal, which is subordinate to a charcoal 3 cm Luk bat could not bully.
The magnetic, electrical and metal detection. To extract the metal unwanted. Before going through the second set to a small battery. This is a small battery size Tok querent 3 cubic centimeters.
The electromagnetic system and system monitoring metal. To extract metal undesirable. First through to the second series, charcoal filter The sub charcoal to size do not grow that 3 cubic cm.