The EDF's Yu Ning also mentions that the drive to get certification is moving up and down the entire production chain as major local firms such as Teco Electric and Machinery have even begun requiring that their upstream suppliers pursue ISO 14000.
于寧也說，國內有些大廠，像是東元電機，甚至開始要求上游廠商也要推動 ISO 14000 的驗證，形成一條上下遊互相帶動的鍊條。