Insert binary data on postgre

How can I do to put a file into the PostgreSQL ? I
have got the contents of file in binary yet and put on
a String on my APP, but when I try to insert it on
postgre, it returns to me:

ERROR: parser: unterminated quoted string at or near
"BMæ»
' at character 90

My string:

ConnP.Execute "insert into fotossocios(arquivo)
values('" & Conteudo & "')"

Could somebody help me how to construct the right
string ?

Thanks
Eduardo

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