Robin Sumner, managing director of Romax, said: "We have always been proud of the service we offer our clients and the way we conduct our business.
"The award of ISO 9001 means this has now been confirmed by external experts who regularly judge such standard across various sectors."
South-east London-based Romax currently runs a Xerox DocuColor 5000, as well as seven mono digital machines. It also has two inkjet machines.
The company provides direct marketing services including design, data supply, data management, print, packaging, enclosing, bulk distribution, pick and pack options, postal solutions and worldwide distribution.
Romax employs 27 staff at its 1,393m2 facility and has a turnover of £3.8m.
