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what is lead seal

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Update time : 2017-11-16 18:17:00
Lead seal refers to the equipment similar as lock which is implemented by verification personnel after measuring device is inspected qualified. Once locked, lead seal can’t open randomly if there is no authorization. It can’t be reused once broken. Generally speaking, each seal has unique serial number or anti-proof mark so as for easy management. For example, lead seal of electric meter is locked by verification personnel after inspection is qualified.