A Quarter Century of Cellophane: MS and CU of two trees, leaves fluttering in the wind, countryside in background. Various exterior MLSs of Dupont cellophane factory at Shawinigan. Interior level and HAMSs of supermarket showing shopper pushing shopping cart to cash register, emptying cart of goods, of cashier punching register as shopper puts cellophane-wrapped items on counter. HACU of goods filing across frame on moving counter.