E-640 is very suitable for making silicone rubber stone molds. It is featured with extremely low shrinkage, good fluidity and resistance to many kinds of chemicals; This material do not release any by-product with low molecular weight during its curing process, and it's cured from top to bottom and from the inside and outside simultaneously, namely, deep curing. The E sereise platinum cured silicone will not have the problem of degradation, sticky mold surface caused by the existence of by-product of small molecules under certain conditions, (such as closed environment, high temperature). Known from our customer's feedback, it is very convenient to make cement molds, and it is a high-quality silicone for construction industries. Further more, it can be applied to make multiple piece molds for products with complex design. For more information , pls feel free to contact Mr Woody office no. :0086-755-89212369 Mob:86- 18938867593 FAX: +86-0755-89948030 Skype: woodywoodpecke1 Email : hyjhd@szrl.net szrl5345@gmail.com 2355542631@qq.com Welcome to our website www.szrl.net