China Business visa for Kazakhstan Citizen living in Italy

Yekaterina, those documents are required including your passport and its photocopy, the completed application form attached with a passport-sized color photo, your residence permit in Italy, and an invitation letter from your trade partner in PRC. And then submit your application to the CVASC to apply for it.

Thank you for a reply. Could you please tell me if i need some additional special document like form ""duly autirized unit". I don't know what is it . but i saw in one of the list. thank you in advance

As per my understanding, it's possible that you will be required for an invitation letter from a duly authorized unit. The unit often refers to a local Foreign Affairs Office or a branch office of the Ministry of Commerce. In case that you are required to submit this letter, you can ask your business partner in China to get it for you.