... of copper layer (mm)NoteJB-CA14Φ14.21200,1500,1800,2400,3000≥0.25can be extend the length by the same diameter ... ,1800,2400,3000≥0.25JB-CA17Φ17.21200,1500,1800,2400,3000≥0.25JB-CA18Φ181200,1500,1800,2400,3000≥0.25JB-CA20Φ201200,1500,1800,2400,3000 ... ≥0.25JB-CA25Φ251200,1500,1800,2400,3000 ...