you need a business visa (F visa) to China.
1. Original passport remaining to be valid for at least 6 months with a blank visa page.
2. One completed and truly filled Visa Application Form of Peoples Republic of China with a recently-taken passport photo;
3. An Invitation Letter from a company or institution in China or a visa notification form issued by an authorized unit in China.
Besides, you may need trade documents if you want to deliver goods from China.