鞣 鞣 rou2
suede; chamois; tannin; to tan

strokes 18
radical
革
革
strokes after radical 9
鞣酸 鞣酸 rou2 suan1
tannin

鞣制 鞣製 rou2 zhi4
to tan (leather); tanning

鞣质 鞣質 rou2 zhi4
tannin