ADDITIVES - USES COVERED BY THE WORD ' ' TECHNOLOGICAL ' ' AND , TO THE EXTENT TO WHICH THERE IS ANY DEMAND FOR THESE VITAMINS FOR THE PURPOSE OF THE SAID TECHNOLOGICAL USES , THEY ARE EXPOSED TO THE COMPETITION OF OTHER PRODUCTS SUITABLE FOR THE SAME USES .
26ACCORDING TO ROCHE THE CONCLUSION TO BE DRAWN FROM THIS IS THAT THE C AND E GROUPS OF VITAMINS ARE PART OF A MUCH LARGER MARKET COMPRISING THESE OTHER PRODUCTS AND THAT THE COMMISSION HAS EXAGGERATED ROCHE ' S SHARE OF THE SAID MARKETS , BY FAILING TO INCLUDE THE LATTER .
27THE COMMISSION ON THE OTHER HAND TAKES THE VIEW THAT THE PRODUCTS WHICH CAN BE SUBSTITUTED FOR VITAMINS C AND E FOR TECHNOLOGICAL USES CANNOT BE INCLUDED IN THE SAME MARKETS AS THESE VITAMINS BECAUSE THE TWO POSSIBLE USES OF THE LATTER MEAN THAT THE DEGREE OF INTERCHANGEABILITY OF THE SAID PRODUCTS WITH THE VITAMINS IN QUESTION IS NOT SUFFICIENT .
NEITHER CAN THE VITAMINS USED IN THE END FOR BIO-NUTRITIVE PURPOSES AND THOSE USED FOR TECHNOLOGICAL PURPOSES BE DIVIDED INTO TWO SEPARATE MARKETS , BECAUSE , BY REASON OF THE TWO USES TO WHICH THESE PRODUCTS LEND THEMSELVES , THE MANUFACTURERS AND PURCHASERS ARE ENTIRELY FREE , ESPECIALLY ON AN EXPANDING MARKET , TO USE THEM FOR THE PURPOSE WHICH THEY REGARD AS THE MOST PROFITABLE .
HOWEVER ASSUMING THAT THE VITAMINS SOLD BY ROCHE FOR TECHNOLOGICAL PURPOSES HAD TO BE EXCLUDED FROM THE MARKETS IN QUESTION THE SAME WOULD HAVE TO BE DONE IN THE CASE OF ITS COMPETITORS WITH THE RESULT THAT THE MARKET SHARES WOULD REMAIN UNCHANGED .
28IF A PRODUCT COULD BE USED FOR DIFFERENT PURPOSES AND IF THESE DIFFERENT USES ARE IN ACCORDANCE WITH ECONOMIC NEEDS , WHICH ARE THEMSELVES ALSO DIFFERENT , THERE ARE GOOD GROUNDS FOR ACCEPTING THAT THIS PRODUCT MAY , ACCORDING TO THE CIRCUMSTANCES , BELONG TO SEPARATE MARKETS WHICH MAY PRESENT SPECIFIC FEATURES WHICH DIFFER FROM THE STANDPOINT BOTH OF THE STRUCTURE AND OF THE CONDITIONS OF COMPETITION .
HOWEVER THIS FINDING DOES NOT JUSTIFY THE CONCLUSION THAT SUCH A PRODUCT TOGETHER WITH ALL THE OTHER PRODUCTS WHICH CAN REPLACE IT AS FAR AS CONCERNS THE VARIOUS USES TO WHICH IT MAY BE PUT AND WITH WHICH IT MAY COMPETE , FORMS ONE SINGLE MARKET .
THE CONCEPT OF THE RELEVANT MARKET IN FACT IMPLIES THAT THERE CAN BE EFFECTIVE COMPETITION BETWEEN THE PRODUCTS WHICH FORM PART OF IT AND THIS PRESUPPOSES THAT THERE IS A SUFFICIENT DEGREE OF INTERCHANGEABILITY BETWEEN ALL THE PRODUCTS FORMING PART OF THE SAME MARKET IN SO FAR AS A SPECIFIC USE OF SUCH PRODUCTS IS CONCERNED .
THERE WAS NO SUCH INTERCHANGEABILITY , AT ANY RATE DURING THE PERIOD UNDER CONSIDERATION , BETWEEN ALL THE VITAMINS OF EACH OF THE GROUPS C AND E AND ALL THE PRODUCTS WHICH , ACCORDING TO THE CIRCUMSTANCES , MAY BE SUBSTITUTED FOR ONE OR OTHER OF THESE GROUPS OF VITAMINS FOR TECHNOLOGICAL USES WHICH