I hold personal travel visa to Hong Kong, can I provide the onsite support to customer in Hong Kong

as title said, if I am Chinese and I apply the visa to Hong Kong with travel type, can I provide the onsite support to our customer in Hong Kong? e.g.: machine installation, repair work...etc.

P.S.: my company have office in Hong Kong, China and others country and sometimes may need the support from other region, e.g.: engineer from China come to Hong Kong for support.

Please advise, thanks!