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[]
["上海建桥学院比色石（钻石）需求"]
[{"$nulls":3},"                   "]
["NR.","SIZE","PIECES","POLISHED DIAMONDS"]
[1,"30'",120,"D-M  VVS2-P2"]
[2,"40'",15,"D-M  LC-SI2"]
[3,"50'-60'",5,"D-M  LC-SI1"]
[{"$nulls":3},"需有HRD认证证书 "]

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{"sheet":"Sheet3","index":2,"n_rows":0,"n_cols":0,"rows_kept":0}