@ziawj2,
Memo
To: Staffs of Sales & International Department
From: Harry Li, Training manager
Date: Sept.12th, 2012
Subject: Foreign language training
Recently, our company has got
(change to "has received) a large export order. In order to communicate with the foreign customers smoothly and efficiently and to tackle down the case without a hitch
(Just delete that part) I have been requested to start a foreign language training.
(Add the word "program".)
Staffs of the Sales Department and International Department are required to participate in this training for the reason that
(change "for the reason" to "because") you are closely linked to the order. Your performance in the communication
(Change "communication" to "communicating". with the foreign customers
(add "will") determine whether our company can handle down the case
(change "handle down the case" to "handle the project") and get a good reputation and gain a firm foothold in the industry.
(Better to just delete "and gain a firm foothold in the industry.") That’s why we take it seriously for the training.
(Just delete the entire last sentence)
The training will last for 15 days. I hope everyone could get
(change to "will be")ready for it and spare no effort to improve yourselves. Moreover, to help our company to tackle down the order successfully.
(Delete that entire sentence fragment) At last,
(Change "At last" to "Finally".)the training will be start on Sept.25th, and you are supposed to
(Change "are supposed to" to "will") get the materials for the training from your department secretary before Sept.20th. If there are any problems, please call me as early as possible.
The changes might not make it perfect, but it will be much better. The grammar looks fine to me, by the way. Some of the phrases are a little unnatural.
Stop saying "TACKLE DOWN". "Nail down" is neither better nor worse in a grammatical sense, but nobody ever says "tackle down". They just don't.