... ≤ 10mm Diameter error: ≤ 0.05mm Length error: ≤ 2mm High-temperature Oxidation Magnesium powder were used- Advantage: Long lifespan, rational ... standardize Diameter, high thermal efficiency, fast heat dissipation.Advanced technology and equipment make the quality good and stable ... .All items have passed CE and ROHS certification.- Single-head electric tube (Cartridge heater) ...