Determine Whether Subcontracting Possibilities Exist

Specifically, with regard to FAR 19.705-2(B )(2), when making the subject determination; "[w]hether there are likely to be product prequalification requirements" is listed as a relevant factor to be considered.

The only reference to product prequalifications I've been able to find is in DFARS PGI 217.75 "Acquisition of Replenishment Parts" at subsection 1-103.25 Qualifications as follows -

Any action (contractual or precontractual) that results in approval for a firm to supply items to the Government without further testing beyond quality assurance demonstrations incident to acceptance of an item. When prequalification is required, the Government must have a justification on file—

(a) Stating the need for qualification and why it must be done prior to award;

(B ) Estimating likely cost of qualification; and

(c ) Specifying all qualification requirements.

http://farsite.hill.af.mil/vfdfara.htm

My question is, would the above reference be the only guidance concerning product prequalification requirements; and consequently if they are required, what needs to be considered, with regard to subcontracting possibilities?