Hi there. The Chinese write from large to small. So start with China...then work your way down to the street and exact address. I would assume your country will know where to send it if you start address with China in big capital letters. As for the address, most towns seem to have unified Latin script names...so just go with those. Else just ask whom you are sending it to. I have never mailed anything myself....so this is just a rough idea of form. J.

Here's an example: 北京市_朝阳区_安定路_12号院_5号楼_403号房屋

It's ok to write the address in English, you don't need to write it in pinyin. And usually you should add post code after the city(Shanghai, Beijing, Shenyang, etc.). You should also add district in front of city, because there might be two streets or roads with same name in one city. There are few major cities in China which are independent from any province, like Shanghai, Beijing, Chongqing, etc. When you write address to those cities, you don't add province after city, but if you write to other cities, like Hangzhou, Chengdu, Xi'an, etc, you should add province after city, like Hangzhou(post code), Zhejiang Province. Hope this answer your question.

地址1：上海市闵行区绿地科技岛广场A座2606室 Room 2606, Building A, Blue Ocean, Minhang District, Shanghai City, P.R. China 地址2：上海市闵行区莘建东路58弄2号A座2606室 Room 2606, Building A, No. 2, Lane 58, Shenjian east road, Minhang District, Shanghai City, P.R. China