| 摘要 |
A circuit board is coated by a protection layer made of poly-urethane resin with crosslinking agent, silicon resin with crosslinking agent, or Epoxy Resin and crosslinking agent. The protection layer is poured in a cave of a mold set and the circuit board is positioned in the cave. The protection layer is completely coated or partially coated onto the circuit board. The protection layer is a water proof soft material and absorbs vibration so as to provide a better protection feature of the circuit board.
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