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3,3-Pentamethylene-4-butyrolactam
64744-50-9
Changzhou Good-job Imp. And Exp. Co., Ltd
3,3-Pentamethylene-4-Butyrolactam
Zhejiang Chempharm Industry & Trading Co., Ltd.
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Changzhou Leo Chemical Co.,Ltd.
Hangzhou Colorific Chemicals Co., Ltd.