外商来参观，简单的欢迎词怎么写？

欢迎王先生和张小姐来A公司参观和指导工作．就这个意思，怎么写好点，正规点＞？？？

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Hello,I 'm xxx,Welcome to our factory .

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Warmly Welcome our honorable guest ---- Mr. to visit our company!

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Welcome to invest in our company,we sincerely offer best service to you,I'll be happy to show you around.

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Welcome to our factory 欢迎来我们工厂参观

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