●Adopts high-quality process chip, which has good sealing reliability and prevents electrical degradation

●Laser marking is not easy to fade and prevent refurbishment; epoxy resin grease has good stability

●Oxygen-free copper frame pins, bright tin plating to prevent oxidation, small internal resistance, good conductivity

●Adopt 5 layers of large corrugated kraft paper box, 4 layers of restraint belt protection

●The inner box is protected by moisture-proof plastic film, which is convenient for long-term storage in the warehouse