For lead-free wave soldering, what is the recommended control limits for impurities such as lead, copper and silver for good control?

 
  • 要進(jìn)行無(wú)鉛波峰焊接,推薦的鉛、銅和銀等添加劑的控制限制如何才能獲得最佳的控制效果?
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