what is marketing channel?

David is an early early stage startup angel and mentor and committed to helping innovator to change the world. He is a father of two and love the travel around the world to discover many uncovered touching moments. David 是一位前前期新創事業的導師和天使投資者。他熱愛在幫助創新者改變世界。已經是一位兩個孩子的爸，喜歡到處旅遊，尋找更多還未發掘的感動。