China Powder metallurgy Enterprise Ltd  buildup by a professional and experienced technician and workers .We produce variety of tungsten carbide balls with sizes from Diameter 0.38 - 1.4mm .
Tungsten carbide ball has Advanced production techniques and international technical level. Hardness>1400-1500, roughness Ra0.063-0.8 micron, Diameter  Tolerance <0.001mm, lineation2000-2500m,
wear-out<0.003mm, microspore uniform distribution, writes smoothly, lineation clearing, abrasion proof, long using life , printing ink’ wet ability well, carry over more printing ink, lineation clearing ; 
good handle ,takeing bake superabundant printing ink. 
All of aboved superiors make tungsten carbide ball as the best choice for our everyday used Pens. Any ineresting, please contact us without hesitation.
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