isophthalic acid
CAS NO.: 121-91-5
Purity :99.9%
Polymethylene polyphenyl polyisocyanate
CAS NO.: 9016-87-9
Purity :99.9
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CAS No.:121-91-5
Purity:99.9%
CAS No.:9016-87-9
Purity:99.9