I am seeking visa information for Hong Kong. I am Nepalese nationality currently working for a Japanese company in Tokyo. My company has a branch office in Hong Kong and a factory in China. My company wants me to go business trip to Hong Kong and main land China on September. I will go to Hong Kong office than enter main land China (factory) than will be back to Hong Kong office. So I need multiple visa. From now onwards I’m planning to visit Hong Kong and China very often. My Hong Kong office will provide me an Invitation letter.
What else should I collect as a document to get multiple business visa for Hong Kong and China? How long will it take me to get a visa? What are the other requirements?