I have travelled to China 14 times. In my current passport there are 10 Visas both F & L catagory. I have attended in Canton Fair 4-5 times. I wanted an invitation letter from my several chinese suppliers to give me official invitation letter to visit china for my next trip. But all my suppliers failed to give me inviation letter. This is because, as they said, the government imposed new rules. I am importing machineries, chemicals & building materials for last 7 years. Every year for several times I need to visit China for business development, enquiry, inspection & to search new business. Please inform me how I can get F catagory visa. How can you help me? Please see the note below where one of my supplier informed me the problems of visa invitation.

From: chris lun [mailto:126.com|chrislun]
Sent: Wednesday, March 16, 2011 4:12 PM
To: Sekender Ali
Subject: Bad news for Invitation
Dear Sekender1) You need more Bronze color of 412 sliding. I've sent you packing details, those items are ready for each color. There is no more for bronze. Kindly note this.
2) This afternoon, my exporter get the feedback from the local office of Foreign Affairs. They said, they can not issue the Invitation for some countries including your Bangladesh. If we want to apply it , we have to go to their head office in Guangzhou. Meanwhile, you need to offer a lot of certification, such as --Working Admission--Declaration of Visiting Purpose--Resume--Certification of Non Crime--Certification of Health--Certification of Insuance-----an so onThese files must be in Chinese and English.My exporter said, it is very hard to get the invitation from this year. But they suggest that, you can try to apply it from another Province if you also have supplier there.
So , I am sorry to tell you that this bad news.