Hong Kong Visa from Kuala Lumpur

Dear Sir/Madam,
I have business in Malaysia. I have multiple business type for China, India. I would like to attend Hong Kong Trade Fare next month. I have got invitation letter from Hong Kong Trade Council. Can you guide me how can I apply for Hong Kong's from Kuala Lumpur? Have a nice time.

Best regards,
Ullah Muhammad Ahsan
Managing Director
Ahsani Weaver Sdn. Bhd.
Kuala Lumpur, Malaysia