適用於0.20mm及以上的孔徑鑽孔， 用於高多層、高銅厚且對孔壁質量高要求的高端精密PCB板（如高端通訊板、汽車板等）。

Application: Suitable for drilling holes with a diameter of 0.20mm and above, used for high-end precision PCB boards with high multi-layer, high copper thickness and high requirements for hole wall quality (such as high- end communication board, automobile board, etc.).