Our rubber threads are made of natural rubber latex.
Size: count (round)20 up to 100
Place of origin: Medan, Indonesia
Physical properties, example:
 - Count 20 - 26:
  1. Modulus 300%,g/mm2 = around 200
  2. Modulus 500%,g/mm2 = around 750
  3. Elongation at break, %= >650
  4. Resistance at break,g/mm2 =  
     3000 - 3600
  5. Schwartz value,g/mm2 = around 150