Flavor for powder drinks from Turkey

I am a consulting for many of small and medium Egyptian manufacturer companies have more than 5 years experience in Egypt market made before good connection with some European companies like Iberchem Murcia-sprain, EDO grass-France .
But they samples not accepted from my client,
Samples for flavour manufacturing:
1- Butter ( milky, butyric/ fatty, creamy )
2- Margarine municipal.
3- Flavor (in powder version) for orange, beach, apricot, mango to uses of powder drinks
4- Caffeine
5- Liqu