Although both versions have been cut, they have been edited differently.
Runtime HK Tape Cat III without credits: 1:28:02
Runtime Japan LD (NTSC) without credits: 1:33:46
with credits 1:34:54

The HK DVD is uncut.

00:21:56
When Wong starts gutting the first corpse, a shot of him pulling out the entrails is missing.
1 sec.

00:22:20
He keeps on dismembering the body before putting the flesh into a meat grinder.
11 sec.

00:33:09
Wong gags the waitress with her own panties.
8 sec.

00:33:57
A few shots of Wong hurling some cups after the waitress are missing.
3 sec.

00:33:11
The scene in which Wong pours boiling water over her fingers is missing this shot:
2 sec.

00:34:33
Wong slams her head two more times onto the table.
2 sec.

00:34:53
He grabs her breasts a bit longer.
2 sec.

00:35:24
The rape has been expanded, he grabs her breasts again and twists her nipple.
15 sec.

00:35:34
He sticks some chocksticks into her vagina.
1 Sec

00:35:42
When he pulls the chopsticks out, the table can be seen from below and blood drips down.
4 sec.

00:59:23
When Wong gets beaten up in prison, a scene is missing in which a fellow inmate urinates onto Wong's neck for quite some time.

7 sec.

01:03:29
Wong slashes his own arm, close-up of him during the process.
5 sec.

01:03:48
When his cellmate confronts him with his self mutilation, a shot of Wong ripping flesh from his own wrist by using his teeth is missing.
4 sec.

Wong kills Cheng's family:
01:18:08
He bites off a piece of the woman's cheek and spits it into Cheng's face. His children are forced to watch it.

01:18:48
He shakes a child until it bleeds and then tosses it to Cheng.
3 sec.

01:19:17
Cheng can be seen lying on the floor with a knife in his neck for longer period of time.
2 sec.

01:19:46
A child falls backwards and blood flows from its back.
3 sec.

01:19:58
Wong beheads one child on the table (In the OFF).
9 sec.

01:22:38
Wong cuts off an arm.
1 sec.

01:22:45
Wong keeps on dismembering the bodies. Bloods splashes into his face and into a fan. He wipes the blood off his face and glasses.
7 sec.

01:22:59
Wong keeps on slashing and sorts the body parts into boxes, he then walks past the parts.
28 sec.

01:27:23
In prison he opens his arteries with a can opener.
4 sec.