你需要一个善于和客户打交道的中国人。
You need a Chinese person who is good at dealing with clients.
The sentence “S + 善于和...打交道” (shànyú hé ... dǎ jiāodào) means somebody is good at dealing with what. Take a look at the following examples:
1. 他善于和客户打交道。
He is good at dealing with clients.
2. 我不善于和孩子打交道。
I'm not good with kids.