About - ACI Merchant Systems LLC

Michael Collester, CEO
136 East Watson Avenue | Langhorne, Pennsylvania, 19047

Originally founded in 1989, ACI Merchant Systems, headquartered in Langhorne, Pennsylvania, has become one of the nations premier providers of transaction processing services and payment technologies to financial institutions, VAR's and merchants.

ACI provides state-of-the-art payment processing services to an entire array of merchant types and sizes, ranging from the smallest of home-based businesses to mid-sized and high-volume merchants, including but not limited to general retailers, medical and health care providers, schools, non-profit organizations, municipalities and web based retailers.


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Mykol Etoile
Mykol Etoile

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Nice place

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