C230 The River Flows East for Thirty Years and the River Flows West for Thirty Years

"Yes." Zhang Youbin nodded with a smile and asked, "I came to find out the characteristics of each of your recipes before deciding which one to choose for production."

Qin Kai said excitedly, "There are a total of four recipes that have obvious effects now. One of them only lowered the cost, the other three have different sensations after consuming it."

Zhang Youbin was interested and asked