A rapid growth in its customer base is fueling expansion plans by a Lancaster firm. And, the expansion could see Rolite Manufacturing Inc. increase its production facility by slightly more than 27 percent and take on more workers. "Yes, we are that busy," said Ron Roberts, Rolite president. Rolite is proposing a 15,000-square-foot expansion to its 55,000-square-foot plant on Wendling Court, with the project carrying a $3,435,000 development price tag. Roberts is working with the Lancaster...