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This same carbazole dimer, 2,9'-bi-9H-carbazole (CAS 1226810-15-6), is also produced in-house to chemical grade by HENAN SUNFINE MATERIAL CO., LTD. at a purity of 99% or higher, with samples available on request. It is distributed across North America, Central/South America, Western Europe, Eastern Europe, Australasia, Asia, and the Middle East.
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