requirements for business visa. Please i am a Nigerian with a Qatari resident permit

Jude, do you mean to get the business entry permit for HK? If so, you need to submit a copy of your passport, a filled-out application form, a recently-taken bare-headed photo, a copy of your residence permit of Qatar, a copy of financial standing document, a copy of proof of transportation arrangement, and an invitation letter from your trade partner in HK.