[db:摘要]

[db:摘要]

[db:摘要]

[db:摘要]

[db:摘要]

[db:摘要]

[db:摘要]

[db:摘要]

QG A-1 is a very active polyurethane catalyst containing bis-dimethylaminoethyl ether, which is widely used in all types of foam plastics

QG A-33 is a liquid catalyst containing 33% triethylenediamine. This highly active tertiary amine catalyst promotes isocyanate and polyol

QG AN-38 is a liquid catalyst containing 28% triethylenediamine. It can promote the reaction between isocyanate and polyol, making the foam