H
T
P
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  - O
  - O
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N
V
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Optical Brighteners For Plastic, Resin

B
O

O

<C, F, O,R<

g

cof — O
L

荧光增白剂4bk新 — O

cof — O

荧光增白剂OB新 — O

ST-3 (5) — O

MST — O

荧光增白剂EBF新 — O

Intermediate

B

O
4
O
T
O
O
F
O
O
O
f
O

G
G
B

D

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O

<
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1
S

S
o

S
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.

O

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H
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M
M2
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M2
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O2
P
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H

g

F
p
B
O
1
M
p
U
C
U
F

3
T
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