The LEDs are a 5050 SMD type and are manufactured by a variety of semiconductor companies around the world, mainly in the Far East and Americas.
It would be very difficult to know exactly which company produced the LED, without knowing the manufacturer of the strip.
The specification may vary slightly, but we would be mainly interested in the IF. Take a look here for an example: http://www.diluled.com/led-smd-2.html
You can see which SMD resistors are used on your strips, look for RR, RG and RB and with Ohms law, you can confirm this.
Its also worth making sure, if you do need to replace any, that the beam angles are similar, but also consider that color bining and manufacturing lot codes from different manufacturers will mean that there could be a chance of witnessing a slight colour difference.
When ever I repair strips, I make sure I replace all of them, from the same vendor.
I have even seen, from lesser "manufacturers" from china, where one colour varies across the whole 5m reel, not good.
Hope that helps a little.