Writing a Chinese email for business you need to explain on detail the purpose of your letter in the Chinese formal style.
You need to know exactly what to write and how you are going to inform your Chinese connect about your business purpose.
You can quickly build up any kind of the Chinese business letter and email with the help of the Chinese commercial correspondence textbook for self-study “Supersonic Commercial Chinese Book 1” by Polina Shinkina
http://www.lulu.com/content/e-book/supersonic-commercial-chinese-book-1/18827988 and
http://www.lulu.com/spotlight/polina985