久久久久九九精品影院|国产经典一区|操丝袜逼|东京道一本热大交乱|亚洲啪在线
Caustic soda
Citric Acid
Oxalic Acid
Formic Acid
Paraffin Wax
Sodium Benzoate
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THIOUREA
(NH
2
)
2
CS
99.0%min
ash
0.10%max
water insoluble
0.02%max
CNS
0.02%max
melting point
171Cmin
packing
25kgs plastic woven bag
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