Development letter format is very important step in the development of a professional letter format, not only to increase the development of the letter is the chance to browse and reply, but also give the customer an initial strength of the company and professional produce trust, thereby increasing the probability of orders, on the contrary, will let customers of the company resentment even pulled blacklist Generally speaking, a development letter by the title, subtitle, body, and signatures up the title in front must be coupled Re: word specific wonderfulat I will not say, since we can experience, such as our products are sewing machine parts, corresponding to the title is Re: sewing machine parts. addition, the text font format to be beautiful, size should be moderate, do not be written in Times New Roman and other Chineseformat, I generally use Times New Roman 12-point font, and finally the signature, the signatures have to do it pretty, and include information must be whole, such as your name, title, company, address, phone, fax, website, etc.are included.