i want a detail information regarding two weeks business visa.

Do you mean the Sawdust manufacturing machines company will provide you the invitation letter and confirmation of invitation to you for your China business visa application? Hve you done some research on the company. My advise is that you just apply for a China tourist vis ato China to do a detailed reerach about the company first.

To apply for a China business visa, you need the following documents:
1. Duly completed Visa Application Form affixed 2 recent color photos taken within 6 months
2. Original passport with a validity of more than 6 months and minimum two blank visa pages, and photocopies of the personal information of your passport
3. If it is your first visit to China, please provide your local police character/clearance certificate which should be attested by Ministry of Foreign Affairs of Paksitan first
4. Original invitation or confirmation letter from an authorized government organization like the local foreign affairs office or etc. in China
5. Invitation letter from your inviting Chinese organization
6. A recommendation letter from your local Chamber of Commerce & Industry or your company Registration Certificate
7. A supporting letter from your organization
8. Your tax certificate (photocopy)
9. Your bank statement (personal or company)
10. Your round-trip air tickets and hotel booking (first time visit to China)