patent for invention
- Vertical polycrystalline / tungsten steel painting
- Horizontal polycrystalline / tungsten steel painti
- Nano coating mold
- Polycrystalline / tungsten steel profile die
- Polycrystalline diamond wire drawing die
- Cutting wire drawing die for photovoltaic
- Natural diamond drawing die
- Extrusion guide die
- Drawing die
- Agent products
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