The History of Braille Publishing Unit (UPB)
a. 4-5 units of braille printer from the Lebak Bulus special school;
b. 2 units of printer from Mitra Netra Foundation;
c. 3 units of printer from Raudlatul-Makfufin Foundation in which 1 unit belonged to Makfufin, and the 2 other were borrowed from the Lebak Bulus special school.