Interojo Cuts Production Planning Time by 92% With MOZART 3.0

South Korean contact lens manufacturer Interojo has cut its daily production planning time from about two hours to around 10 minutes after deploying VMS Solutions' SaaS-based MOZART 3.0. The company also reports a 6.6% reduction in inventory after replacing separate spreadsheets with an integrated planning system.
- Interojo cut daily production planning time by 92%, from about two hours to around 10 minutes.
- The contact lens maker reduced inventory by 6.6%.
- MOZART 3.0 replaced separate spreadsheets across thousands of SKUs.
- The system plans processes from injection molding to packaging, including outsourced work.
- Interojo resolved 99% of master data errors during implementation.
One system for thousands of contact lens SKUs
Interojo makes contact lenses under its own Clalen brand and serves as an OEM/ODM partner for global eyewear companies. The KOSDAQ-listed company exports to more than 120 countries and produces more than 200 products, including daily and color lenses.
Those products branch into variations based on prescription, color, function and wear cycle, creating thousands of stock keeping units. VMS Solutions described the operation as a high-mix, low-volume manufacturing environment. Before the deployment, planners coordinated production in separate spreadsheets.
With MOZART 3.0, Interojo plans each stage from injection molding through packaging in one system, including outsourced processes. The company also restructured its bill of materials down to prescription-level SKUs and incorporated process rules and planners' expertise into the platform. According to VMS Solutions, this allows departments to plan using the same standards.
Planning time falls from two hours to 10 minutes
VMS Solutions said Interojo achieved a 92% reduction in daily planning time, from about two hours to around 10 minutes. The company also resolved 99% of master data errors during implementation.
The longer planning horizon in MOZART 3.0 is designed to surface delivery risks and bottlenecks earlier. VMS Solutions said the system also helped reduce inventory by 6.6% by accounting for yield, packaging units and substitute SKUs during planning.
“We used to be so focused on building the plan that we missed problems we can now see coming in the data,” an Interojo spokesperson said. “We're also putting MOZART 3.0's AI features to work on our planning data. Our role has shifted from making plans to shaping strategy.”
A SaaS deployment with other options available
Interojo runs MOZART 3.0 as subscription-based SaaS. VMS Solutions also offers the platform on-premises or in a dedicated cloud environment, allowing manufacturers to select a deployment model based on their IT and security requirements.
Keyhoon Ko, Chief Global Business Officer at VMS Solutions, said Interojo's case demonstrates what integrated planning can deliver in a complex manufacturing environment. “Many manufacturers in the U.S. are managing the same kind of SKU complexity in spreadsheets,” Ko said. “The same approach can help them plan faster and carry less inventory.”
VMS Solutions said MOZART 3.0 is built on its simulation-based planning engine and serves manufacturers in sectors including semiconductors, displays, automotive, pharma and biotech, electronics and consumer goods. The company supports customers through offices in the United States, Korea, China, Singapore and Japan.


