What is the hardness we should choose

Normally, different size of silicone mold should be select according to different product's features.
For example :
* Recommend product AS220
For products size ( within 20 cm ) : With fine designs, soft silicone is suitable, suggest 10-20 shore A.
* Recommend product AS225
For products size ( 20cm-80cm ) : With fine designs, suggest 20-25 shore A. With simple designs, suggest 25-30 shore A.
* Recommend product AS225 or AS230
For products size ( 80cm-150cm ) : With fine designs, suggest 25 shore A. With simple designs, suggest 30-35 shore A.
* Recommend product AS225 with brush on method or AS230
For products size ( more than 150cm ) : With fine designs, suggest 25-28 shore A. With simple designs, suggest 35-40 shore A.

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Liquid Silicone Rubber Factory manufacture mold making silicone rubber materials.