I like #2. "The heaven of ... " and "tri-win" both sound awkward to me.
Quote:(2) the smartest approach of pushing sales is based on win-win cooperations among the manufacturer, marketing channels and customers.
might be improved like this:
The smartest approach to pushing sales is based on win-win cooperation between the manufacturer, the marketing channels and the customers.
I know, I know,
between is only two and
among is more than two, but it just sounds better to me. I guess I visualize a triangle, with cooperation running back and forth along the sides -- between two of these elements at a time.