Before or tin plating nickel plating of bad contacts between the cathode, discharge sparks will melt into hollow copper hole.
镀镍前或锡电镀间的阴极接触不良，放电火花将铜材熔成凹洞。
The die is heated with electrical resistance cartridge heaters placed in hole drilled in placement areas selected to avoid localized hot spots, which would affect melt flow uniformity.
该模具是受电阻加热器加热用，放置在精选的钻孔中，以避免所在的热熔点影响熔体流动的均匀性。
Optional equipment: hot-melt coder, inwrap (nitrogen) device, packing bags hanging hole devices, packaging films perforated exhaust.
可选装置：热熔打码机、充气（氮气）装置、包装袋挂孔装置、包装膜打孔排气装置。
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