Requiring enterprises to implement a dual-personnel, dual-control system for sodium hydrosulfite.

Firstly, the warehouse must have designated management personnel and implement a dual-personnel, dual-lock system. Secondly, the procurement officer must verify the quantity, quality, and relevant safety documents of the sodium hydrosulfite upon procurement. Thirdly, a handover inspection procedure must be conducted when the procurement officer delivers the material to the warehouse keeper, with signatures from both parties. Fourthly, a formal requisition procedure must be followed when workshop personnel receive the material from the warehouse keeper, with signatures from both parties. Fifthly, the ledger records for the procurement and usage of sodium hydrosulfite must be properly maintained for regular inspections.

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