Solution : https://service.sap.com/sap/support/notes/131660 (SAP Service marketplace login required)
Key words : 
0b additional key words china simplified chinese 4, \\usr\sap\put\log\act40b, start importing chinese language data, database/os upgrade problems, simplified chinese windows nt, simplified chinese version, chinese language import, database installation problems  2, individual install phase  3, codepage conversion tables
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