Optical Brighteners For Plastic, Resin

C

NA, B, A,A<

P

ST-2 (2)

A

L
BA 1

B

荧光增白剂4bk新

A

cof

A

nfw-l

B

荧光增白剂KSB新

B

ST-3 (5)

A

Optical Brightener

L