1. Thank you for your interest in our company.
非常感谢您来我们公司参观。
还能这样说：
Glad to have you visit our company.
We are really honored to have you visit our company.

2. I hope you will find everything satisfactory.
我希望您对一切都感到满意。
还能这样说：
I hope you are satisfied with everything.
I hope everything can satisfy you.
应用解析：
set one's hope on 寄希望于……；
beyond (all) hope 没有希望；
build one's hope on 把希望寄托在……

3. Your company has a very good reputation, and I have been planning to visit for a long time.
贵公司一直享有盛名，我计划来参观已经很久了。
还能这样说：
Your company is well reputed and I have been planning to visit it for a long time.
Your company is of repute and I have prepared to visit it for a long time.
应用解析：
live up to one's reputation 名副其实；
a blot on one's reputation 名誉上的污点；
have a reputation for sth. 因……而著名

4. I'm impressed by your approach to business.
你们经营业务的方法给我留下了很深的印象。
还能这样说：
Your approach to business makes a strong impression on me.
Your approach to business impresses me.
谚语：
Business makes a man as well as tries him.
事业可以考验人，也可以造就人。