It's a play on words - 資料 is "source materials," 紙料 is "pulp," and 死[重]量 is "dead weight." They are all pronounced "shiryo." The Japanese often use this type of pun in business writing to emphasize a point. What is not often done, however, is translating this kind of thing in English (as has apparently been done in the document you are translating into Russian) because, obviously, it makes no sense to someone who doesn't speak Japanese. On the other hand, if this quote has been attributed to someone, then I suppose someone thought the saying was worth translating as is. You can judge the wisdom of that decision on your own.

Incidentally, the translation of "shiryo" as "source materials" is not very good. I've tried to indicate the lexical scope of the word to help you choose the right Russian word. Incidentally, "shiryo" is transliterated сирё, and not ширё.

(Jim Breen's dictionary gives материал; данные for shiryo.)

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Note added at 1 hr (2006-04-04 00:28:05 GMT)
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http://www.csse.monash.edu.au/~jwb/cgi-bin/wwwjdic.cgi (choose j-russian)