The chemical reaction speed of STONE-TECH^® depends on the temperature of the breaking object. Use the proper type according to the worksite temperature:
SCA-I  : For temperature range 25℃~40℃ (77℉~104℉);
SCA-II : For temperature range 10℃~25℃ (50℉~77℉);
SCA-III: For temperature range -5℃~10℃ (23℉~50℉).
The reaction time of STONE-TECH^® to crack stone is around 6 hours. It depends on material of cracking object, holes design and temperature, etc. Generally speaking, within the temperature range of each type, the higher temperature when you use STONE-TECH^® and the closer place of holes, the quicker to crack the object; otherwise, the opposite.

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