A document used to effect delivery on a futures contract, such as a warehouse receipt or shipping certificate.
用以实现期货合约交割的证明文件，如栈单或海运信用证。
Operator Certificate such as lift Operator, Lifting Appliance Operator and Forklift Driver, etc. License for Dangerous Chemical Warehouse Keeper, Electrician and Welder, etc.
工人上岗证，如电梯工、起重机械操作工及铲车司机等。危险化学品仓库管理员证，电工证及焊接工等。
Operator Certificate such as lift Operator, Lifting Appliance Operator and Forklift Driver, etc. License for Dangerous Chemical Warehouse Keeper, Electrician and Welder, etc.
工人上岗证，如电梯工、起重机械操作工及铲车司机等。危险化学品仓库管理员证，电工证及焊接工等。
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