✔ 最佳答案
I suggest you to consider Q-Pets:
http://www.q-pets.com/QPwebmaphtml/new%20territoroes.html
It has 29 chain stores available, which is the largest-scaled as I can find in Hong Kong. You can also purchase online via the above webpage.
Hence, you can check if its products can suit your needs. Basically I am very optimistic you can find your desired products there from its store within your living district.
Hope I can help you.
參考: Mathematics Teacher Mr. Ip