The reason you are having a hard time with this slogan is that it has been poorly plagiarized. It is used by many businesses in many different ways, and when it is worded well, it can be pretty effective. This particular wording misses the boat, but perhaps you can remedy the situation in the translation. To restore a semblance of meaning to it, it would help to fill in the gap by adding the words ترويجه للجمهور. The appropriateness of this addition will depend on how you translate or construe the phrase "to build a brand." I understand it to mean "to build a customer base for the brand."