... Titanium (nano-titanium),99.99 germanium(molecular germanium),99.87 magnetic (permanent magnet) into the entire chain on the release of ... increase oxygen content in blood, improve immunity and so on.magnetic field can increase anion in our body, adjust the balance ... , which has good abrasive resistance .It's brightness looks like mirror, won't fade. Also Tungsten steels are tough, hard, and ...