you can double check in any DHL office what will be the requirements for business visa. usually, passport, visa copy check about medical. everyday changes. those papers u need for certification from qatar embassy Phils.

after the cerification of qatar embassy, sticker will be on your passport iyan ang tinitingnan ng airport manila. beside, travel tax and terminal fee. for sure.... bring all the relevant documents with you on hand incase.

NOC only needed if you are applying for another job. i hope...