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Hefei Tengchao Chemical Material Co.,Ltd


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GBL Can Be Widely Used for GBL Wheel Cleaner
Normal Grade 2-Pyrrolidone Used for Pharm and industry
N-Ethyl Pyrrolidone 99.9%min Special Used for Pharm
Industrial Grade Γ-butyrolactone Can Be Widely Used in the Ink, Paintings and Coatings Manufacture P
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