Ladies and gentlemen,
Good morning/afternoon/evening.(根据发送时间选一个)
I am Liwen, who joined Foxconn last week.(默认为发给外国人的,形容词省掉) I am very glad to become a member of this big family as a SQE. Your support and cooperation are welcomed in the future work and your advices and criticism will give me a great help and courage. As a outgoing and easygoing person, I hope we will become good friends.
With Sincere regards.
Yours,
Liwen
(应该是刚见面,写得比较正式。欢迎提意见。)