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The question is whether a fabricating shop wants to invest in a physical barrier or a more open safety system using light curtains. 這個(gè)問題涉及一個(gè)鈑金工廠是否愿意投資一個(gè)有形的圍欄，或者一個(gè)更加開放和安全的光柵來保證人員安全。