I am using this guy. This is the same size, but with 45mm depth, only the HEPA media. Airflow speed is like 80-90% of the original Samsung filter despite the deeper depth (deeper pleats). So for sure the CADR would suffer somewhat.
Original samsung HEP portion is like 38mm, with 10mm depth for the activated charcoal.
RMB 115. So basically ~ SGD 30 after factoring in shipping + packaging.
https://item.taobao.com/item.htm?spm=a1z10.3-c.w4002-1526560714.10.gZRvjN&id=522668837488
edit - i think you better aliwangwang him for details. Coz i think this rmb 115 price is 45mm depth HEPA filter. The details also show a black AC layer, in which case he'd probably spec either 30mm or 35mm depth for the HEPA, and the rest for the activated carbon layer.