Safety Standard of Machinery, Equipment and Tools Article 12-1

If the distance between the optical- axis of a detecting mechanism and the front edge of a bolster is enough to be intervened by a body part, the press or shear machine with a photoelectric safety device shall have a safety fence or a middle optical-axis to prevent intervening.
中文原文 機械設備器具安全標準第12-1條
具有光電式安全裝置之衝剪機械,其檢出機構之光軸與台盤前端之距離,有足使身體之一部侵入之虞者,應設置防止侵入之安全圍柵或中間光軸等設施。

English translation for reference only; the Chinese text prevails. Not legal advice.