C248 New Goods Hit the Market(part Ii)

He didn't know what Zhang Youbin was going to get, but he definitely believed Zhang Youbin's ability. After all, he and Fourth Master had both secretly studied Zhang Youbin's formula, what was the concept of saving 20% of the cost?! Yet, he didn't find anything …

When Zhang Youbin arrived at Master Ding's villa, Master Ding was already waiting at the door