COBOL range of printing consumables is a trusted partner for most government and enterprise units, SMEs in terms of compatibility, cost effectiveness, qualification, printing results and application scope! Since from 1992, COBOL has been insisting on improving its independent innovation capability and building its core competitiveness. We have obtained a number of utility model patents, design patents and invention patents. We respect intellectual property rights, bring higher value to our products and protect the sustainable development of the printing consumables industry.