Can i import a Chinese hiphone to japan? -

I live in japan and i like to purchase chinese version of iphone (via ebay). The main concern is about Japanese regulation (concerning safety, material, etc etc *what a hassle*) which i cannot understand by searching webs. I am not a Japanese, and i will return to my country after 2 month. I anyone have any experience/information, please let me know. Thanks.

Hello.I am japanese in Tokyo.How many hiphones are you going to import to japan?If you import for example 100 phones, the customes will treat it as a article for sale.But if you import small numbers of phones,you do not have to confess it.