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YOUR RELIABLE
CREDIT CARD PROCESSING PARTNER
Unmatched Quality Customer Service for Your Business
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MISSION
Through our technology, business processes, and trust-based working relationships, we will become irreplaceable to our Merchant Partners.
Payment Processing Solutions

Why Partner with GMMP?
Fast, Reliable, and Experienced Service of Accounts
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​Merchant Services customized specifically to your needs
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Experienced former bankers who understand the industry
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Trusted advisors focused on Service, Honesty, and Integrity
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Access to a full suite of POS equipment and software
Hands-On Attention Given to Each Customer
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Calls are answered personally with a 24/7/365 Back-up
High Retention Rates.
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GMMP has over 98% customer retention rates year over year
Mutual Vision of our Customer Base
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Services are based on true customer benefits
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Highly competitive rates with no hidden fees
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The latest technology and innovations
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Reciprocating referrals to our Merchant Partners
Training, Communication and Security
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Hands-on training with ongoing updates and support
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Management reports to help track and grow your business
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State of the art PCI security to protect your data

Customer Support
Friendly, Responsive Customer Service
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Direct calls to managemnt via cell or office line
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24/7/365 terminal help desk backup call center
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Billing support 7am – 6pm EST, Mon – Fri
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Bi-lingual (English-Spanish) support
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Trouble ticketing system & caller history
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Specialists have an average of 7 years experience
Backup call center handles over 11,000 calls each month
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90% are answered immediately
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100% response within 30 minutes
Other services
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Account maintenance
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Merchant research
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Equipment fulfillment
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Terminal reprogramming
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All New! State-of-the-art Dispensary Solutions


Maritech is the clear choice for cannabis Point of Sale (POS) and Processing solution technologies. As an Independent Sales Office for SALT MONEY (SALT) and Alleaves, we can offer state-of-the-art solutions and provide you with the latest compliant POS and Processing software. You can rely on Maritech for efficient and reliable cannabis operations management.
Maritech provides you with the most powerful and updated partner technologies on the market. Our partnerships with SALT and Alleaves empower your access to POS systems that will streamline your day-to-day operations, saving you money and giving you more time to grow.

CONTACT US
OUR ADDRESS
230 W. Front St, Monroe, Michigan 48161
Phone (724) 244-5535
Ryan Hauser - Ryan@grandmillmp.com
Chuck West - Chuck@grandmillmp.com