SP Marl GmbH manufactures and supplies chemical products. The company offers acetylene, butanediol, formaldehyde, tetrahydrofuran, and butynediol products. It serves customers worldwide. ISP Marl GmbH was formerly known as GAF-Huls Chemie GmbH and changed its name to ISP Marl GmbH in April 1998. The company was founded in 1975 and is based in Marl, Germany. ISP Marl GmbH operates as a subsidiary of Ashland Global Holdings Inc.