Not only adds value to a product, the name of the products also contributes to the customer's prefere. Should be: The name of a product not only adds value to it but can also add to it's customer appeal. I would agree with DanO but for the "well-translated" part. There is no mention of that in the original text.

Yeah, you don't start a sentence with 'not only' unless it is followed by 'do' Not only do I like it, I love it! Not only did you forget my birthday, you stole my bicycle. You should maybe consider the cosntruction 'not only... but also' And it's good clear writing to start with the subject. A product's name not only adds value to the product, but also contributes to the customer's preference. Though I'm not quite clear what 'customer's preference' means- how many people prefer it? So maybe A product's name adds not only value, but also customer appeal.