I got 5 Google hits for "subcontractor sectors" :

The study is scheduled for completion in late 1996; the semiconductor
industry plans to direct resources to those SUBCONTRACTOR SECTORS which are found to potentially
hamper the industry's competitive goals as outlined in the industry workplan, "National
Technology Roadmap for Semiconductors".

www.google.com/search?q=cache:www.bxa.doc.gov/press/publica...

Arundel Custom Homes - About The Company
... quality master home builders in Maryland. Mr. DelSesto focuses on the construction,
personnel and SUBCONTRACTOR SECTORS. His objective is to obtain the best ...
www.arundelhomes.com/principal.html - 9k - Cached - Similar pages


About Site Safe
... the above guidelines. The workbooks will be developed for the client, designer/adviser,
and contractor/SUBCONTRACTOR SECTORS of the industry. The workbooks ...
www.sitesafe.org.nz/about.html - 22k - Cached - Similar pages


Wickford Homes - About The Principals
... builders in Maryland, Delaware and Virginia. Mr. DelSesto focuses on the construction,
personnel and SUBCONTRACTOR SECTORS. His objective is to obtain the best ...
www.wickfordhomes.com/principal.html - 7k - Cached - Similar pages


Economic Circular Flows, Chapter 2, Lars Olert
... Draw resource flows in a separate diagram. Which are the processes inside the
Volvo and SUBCONTRACTOR SECTORS? Formulate the equations that describe the ...
home.swipnet.se/~w-61407/description1/chap2.htm

I got 9 Google hits for the singular form of the term ("subcontractor sector").

I got only 2 Google hits for "Zuliefererbereichen":

Auf dem kanadischen Arbeitsmarkt wurden 1998 die besten Ergebnisse des gesamten Jahrzehntes erzielt. Insgesamt wurden, so die jüngsten Zahlen von Statistics Canada, 449.000 neue Arbeitsplätze geschaffen, 3,3 Prozent mehr als 1997. Dabei handelte es sich überwiegend um Vollzeitjobs. Allein in Ontario gab es 213.000 neue Arbeitsplätze, die meisten in der Automobilindustrie und deren ZULIEFERERBEREICHEN. Auch beim Abbau der Arbeitslosigkeit erwies sich das vergangene Jahr als das erfolgreichste der Dekade.

www.kanada-info.de/Newslink/CanaInfo/gci49902.htm

I got 91 Google hits for "Zuliefererbereich".

There were no Google hits for "subcontractor fields " with your targeted meaning.

I hope this helps.

Best of luck.

Davorka

I'm not sure if this is the right expression, but the Zuliefererbereich concerns those who produce the parts and the (raw)materials

>>A total of 350 companies in Baden-Württemberg are biotechnology companies or suppliers.<<