Addition cure silicone rubber using with attention

As addition cure silicone is a kind of platinum cure system, which will be easy to cause no cure problem, so need to follow the tips below :
Do not mix with liquid condensation silicone rubber or even the tool which used for condensation silicone ;
Do not mix with organic matter which contains N, S, P organics and ionic compound like Sn, As, Hg, Ph;
Do not add any pigment or powder into the addition cure silicone rubber without any testing to prevent no cure problem.