Pioneer Packaging Private Limited offers Regular Slotted Carton - RSC Box. Pioneer Packaging Private Limited is an ISO 9001:2000 certified company. Pioneer Packaging Private Limited is the manufacturer of corrugated boxes, cartons and containers to different segments of industry and users. Regular Slotted Carton - RSC Box is manufactured from one piece of fiberboard which is scored and slotted to form a body having flaps for closing on each of two opposite faces. Regular Slotted Carton - RSC Box is also assembled from more than one piece of fiberboard, and has only one closing face. Lengthwise flaps either meet or overlap, and inner flaps may meet depending on the particular style of box.