Hope to have good relation in Future and please advis us how to get visa?

Dear Sir / Madam Hello hope you are fine. This Lahoob Carpentry Co WLL from Qatar Since Year 2005 eveary year more than one time i am visiting your country China specially Cantoanfair.and more than QR:1000000.00 importing Goods from china. This year 2012 we are planning to arrange busness trip for our represantative to visite cantoan air 111 date 15/04/2012 we send our reprasantative to your embbassy visa section to submite the documents but unfortunatly both times has been rejected they asked for hotel reservasion and statment of A/C for the perioed of six monthas and the orginal invitation we would like to informe you we had show the company no objection letter and mention the professioan and basic salary of our represantative and regarding the Invitation the Governomet of China has send us the E-Invitation by the Mail . The name of our company and reprasantative with full details has been mention and we fell that there is no problem with this documents. We are financially well company in Qatar and have great reputation.Hope to have good relation in Future and please advis us how to get visa?
Our Contact No: 00974 - 44603378 Contact Person Mr Saeed Mobile no: 00974 - 55375995
Looking forward to your early reply. Thank You