EPCG scheme nexus certificate must link imported capital goods to production stages and justify quantities and wastage. Chartered Engineer certificate must verify nexus of imported capital goods with the applicant's pre-production/production/post-production activities under the EPCG scheme, listing item identification, quantity with justification, related export products/services and a process flow showing usage stages; it must certify reasonableness of installation wastage where claimed, confirm the engineer's competence, and include signature, seal, registration number, date, place and contact details, with each page signed and additional sheets permitted.