Key: double-bitted iron key, nickel plate. KA or KD.
钥匙：双面钥匙，镀镍。通开/非通开。
Binding consumables: plastic wire, double wire, iron spiral wire, plastic index film and so on.
装订耗材：胶线圈，双线圈，铁单线圈，胶索膜等。
Binding consumables: plastic wire, double wire, iron spiral wire, plastic index film and so on.
装订耗材：胶线圈，双线圈，铁单线圈，胶索膜等。
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