Certificate of Chartered Engineer verifies machine specifications and packing capacities for GST compliance under prescribed form. Form GST SRM-III, Certificate of Chartered Engineer, requires GSTIN and a table of machine particulars including make, model, manufacturer, machine number, system registration number for specification amendments, purchase date, number of tracks, package weight, packing capacity per track, total packing capacity for a specified package weight, electricity consumption per hour, and remarks; it concludes with the engineer's declaration, signature, registration number and contact details, and notes insertion by notification.