Parker原子筆香港總代理 是Sanford,
Sanford International Hong Kong Ltd. (Newell Rubbermaid Asia Pacific Limited)
世孚香港有限公司
公司/維修
地址: 香港尖沙咀廣東道9號海港城港威大廈第6座35樓 (The Gateway Tower 6)
I checked that the address quoted in the following link was no longer existed as Sanford has moved from Harbour Center to The Gateway.
I also found some information from website that Sogo has repair service too, but I'm unsure. The Gateway address is provided by my colleague who has contact with the company.
Anyway, hope its help.
http://www.parkerpen.com/en/possession/warranty