You can send HK visa application to Chinese embassy in Islamabad, which is authorized to issue Hong Kong visas not exceeding 14 days (including business and tour). The following documents and materials are required for Hong Kong visa applications:

1. Valid passport of the applicant.

2. Completed application forms ID (E) 936 A, B, C and D.

3. Invitation from relevant departments of Hong Kong Government or from Hong-Kong-based international organizations; Or photocopy of stamps of entry and exit of Hong Kong within the last 6 months; Or valid visa of USA, UK, Schengen States or other developed countries.

4. Return air ticket for Hong Kong and its photocopy.

5. Hong Kong hotel voucher of room reservation.

6. Income certificate or bank statement of the applicant.