Language
Φ2
Φ2.5
Φ3
Φ3.5
Φ4
Φ4.5
Φ5
Φ6
Φ8
Φ10
Φ12
Φ13
Φ14
Φ16
Φ18
Φ20
Φ21
Φ25
Φ28
Φ30
Φ35
Φ40
Φ45
Φ50
GB /T 879.2 - 2000
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