Ultroid is to shrink the piles by current. That's good and find on net where to get in Hong Kong.
But remember, it will correct the local site but would not stop the process of recurrence of piles.That may recur elsewhere too where vessels are weakened. However current piles will be treated easily.
Alternatively, to my own patients I would give Ayurveda's and Unani's safe medicine I.e.
tab Pilex ( Himalaya) and tab. Qurs Bandish Khoon ( Hamdard Co.) and powder Naagkesar chooran ( powder of Media ferrea/herb). Pilex may be found in Hong Kong too, other two you have to try or get through net or we may support you.
By these tab (1- 2 each TDS to QDS) and Naagkesar 1/2 tsp TDS with water, instant bleeding is stopped withot side effects. So even if you get one , pl start immediately.
You may go through Ultroid side by side if need is still there after a week. Cont use of Pilex will lead you to pile-less comfort. Qurs Bandish Khoon and Naagkeshar may be stopped when bleeding stops and restart if bleeding again.
Avoid spicy and chilly food. Keep light. Keep bowels clean by herbs.
Hope it would help you 109%. All the best