I know there is a Zhifu district in Yantai.
There is also a Huada Building.
As for the trading company you mentioned, I have never heard of it.
It should be in Huada Building.
Huada Building in Zhifu District of Yantai City is easy to find.
Opposite Zhenhua Commercial Building,
You can also go to the site of Yantai Central Square or the site of Xinhuidian in South Street.
Just a few steps away ~ ~
I hope it helps ~ ~