Chemicals in a Rubber Compound - NSR 20, Accel CS, Accel DPG, Anitiox Q, Antioz PMB
NSR 20 and SMR 20 are natural rubber (Nigerian Standard Rubber and Standard Malaysian Rubber) 

"Accel" and "Orac" mean accelerator.  

Accel DPG is diphenyl guanidine.

"Antiox" and "orox" mean antioxidant

"Antioz" means antiozonant 

"Orac CS" is likely N-cyclohexyl-2-benzothiazole sulphenamide 

"Orac TMTD" is likely Tetramethylthiuram disulfide

"PVI" may refer to pre-vulcanization inhibitor