99.9% B2O3
450元
99.9%-99.99% B pellet
1元
99.9% Fe:Nb:B=63:10:27at%
99%-99.9% Fe:B=80:20 wt%;Fe:B=70:30 at%;Fe:B=83.78:16.22 wt%
99.9% BN
1450元
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