- SANKO CO.,LTD
- Carbon,Ceramics,Precision Machine,Electrical parts,Entertainment,Sapphire,Zirconia.
- Address:2-13-14, Hamamatsucho,
- KDA Corporation (Ceramic Factory)
- ceramic screws, ceramic fastners, ceramic bolt, nut, flat head, pan head, socket cap, zirconia, alumina, metric, unified,Ceramic.
- Address:4-13-6 Nakarokugo, Ohta-ku, TOKYO, Japan
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