Development of the 400G optical engine is underway with prototypes expected in Q2 2022 and scalable production expected in Q3 2022. The following table outlines the project milestones, expected completion dates and costs: Project Project Milestones Expected Completion Expected Expenditures 100G/200G Optical Engine Prototypes Q3 2021 US$4,000,000 Production Q4 2021 US$2,000,000 Total (to production) US$6,000,000400G Optical Engine Prototypes Q2 2022 US$5,000,000 Production Q3 2022 US$2,000,000 Total (to production) US$7,000,000 The Corporation approximates that it requires US$13.0M for the next 18 months to take the above-noted projects to production, which is included in its annual operating plan and yearly burn estimates. Based on the above projections, the Corporation expects that it has sufficient cash on hand to meet the project milestones and take the projects to production stage.