D-Ying Electronic Inc.
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Your PCB prototype is made based on the design you provide. Any special requirements are welcome. 
4 Layer Board With Lead Free HAL Finish 
PCB prototype - 2 layer board, without green paint, bare copper, HAL
PCB Prototype - Plating on the Edges with Immersion Silver Finish
PCB Prototype - 3 Layer, Hard Gold Plating 30u"
PCB Prototype - 8 Layer, Immersion Gold 3u" Finish Board
PCB Prototype - 45 Degree Angle With 4 Layers of Gold Fingers
4 Layer Board With Lead Free HAL Finish - 4 layer board with lead free HAL finish.
- Blue peelable mask
PCB prototype - 2 layer board, without green paint, bare copper, HAL - 2 layer board, without green paint, bare copper, HAL.
- Countersink and counterbored holes.
PCB Prototype - Plating on the Edges with Immersion Silver Finish - 6 layer with immersion silver finish.
- Plating on the edges.
PCB Prototype - 3 Layer, Hard Gold Plating 30u" - 3 layer, hard gold plating 30u".
- Stamp holes gold plating on edges.
PCB Prototype - 8 Layer, Immersion Gold 3u" Finish Board - 8 layer, immersion gold 3u" finish board.
- BGA.
PCB Prototype - 45 Degree Angle With 4 Layers of Gold Fingers - 45 degree angle with 4 layers of gold fingers.