yes, you all need a tourist visa to Yiwu, China, please prepare the following documents:
1)Original passport and a photocopy of its pages with personal information.

(2)A fully completed Visa Application Form with the applicant's signature.

(3)An original letter from the applicant's employer. It should contain the applicant's name, nationality, occupation, purpose of the visit, the planned date of entry and financial conditions.

(4)A passport photo with white background.

(5)A photocopy of a valid residence permit in Saudi Arabia (only for long-term residents of third country nationals) .

(6)If other additional documents are required, consular officers will contact the applicant directly according to the contact information left on the Visa Application Form by the applicant.

Then submit the visa application to the China Consulate in Jeddah.

Dear Mr Johnnash,

Thanks for the prompt reply. I have few further questions.

Is it ok to apply now? Is there any validity period for the visa? And where can I get the form from?

Mr.Syafie, Please don't apply for the China visa now, the single-entry tourist visa to China is generally valid for 3 months, if you apply for it too early, it expires before you go to China, now you plan to travel to China in November, you can apply for it in September or October. YOu can download the visa application form from the top of this web page.