Company
Helping Businesses Navigate Payments with Confidence
For decades, we have helped businesses simplify the complex world of payment processing. From accepting credit cards in-store to implementing modern POS and payment solutions, we provide reliable technology, competitive solutions, and personal support that help businesses operate with confidence.
While our company has deep roots in serving Japanese-owned businesses in the United States, our commitment has always been the same: to provide every business owner with trusted guidance, dependable service, and payment solutions designed around their unique needs.

Our story
Every business has a beginning. Ours began with a small convenience store.
When Katsumi Oiwa first came to America from Japan, he opened a small convenience store and began building a life as a business owner. Like many entrepreneurs, he quickly discovered that running a business meant navigating challenges he had never encountered before.
At the time, accepting credit cards was still relatively new, and the payment processing industry could be difficult to understand. For Katsumi, navigating this unfamiliar world presented an additional challenge: much of the information, communication, and support available to business owners existed within a language and system that was new to him.
But instead of accepting what he didn't understand, Katsumi became determined to learn.
His curiosity led him into the world of merchant services, where he discovered CoCard and a network of independent sales offices built on the belief that businesses could accomplish more by sharing knowledge, resources, and experience. Through that network, he found more than an opportunity to learn the industry — he found friends, mentors, and allies who helped shape his journey.
What began as one business owner's desire to better understand credit card processing eventually became something much larger.
Over the years, the payments industry has transformed. What was once unfamiliar technology has become an essential part of everyday business. Credit cards, digital payments, online commerce, mobile ordering, and integrated point-of-sale systems have changed the way businesses operate — and the industry continues to evolve.
But while the technology has changed, our purpose has remained the same.
We continue to help business owners navigate an increasingly complex payments landscape with the same curiosity, dedication, and personal support that inspired our company from the beginning. Today, we serve businesses of all types and backgrounds, helping them find payment solutions that make sense for their business.
Because in an ever-changing industry, having someone you can trust still matters.
From one small convenience store to the businesses we serve today, our story has always been about helping business owners move forward.
Company profile
- Company
- Big Rock USA Inc. / Smart International Services
- Address
- 1641 W. Main St., Suite 303, Alhambra, CA 91801-1900
- Founded
- October 4, 1995
- Phone
- 1 (800) 500-2899
- info@smartinternational.net
Our processing partners
Fiserv · Global Payments · Worldpay · NMI · Authorize.Net
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