In some companies and industries there is a very good good reason. The supplier will test and QC a range of products and when they find one which matches the s

In some companies and industries there is a very good good reason. The supplier will test and QC a range of products and when they find one which matches the spec they need they will have it branded and brought into their range. Although it's primarily a generic product they have put the time & effort into sourcing it and are [more] responsible for maintaining the quality and compatibility with their other offerings.