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10-13usd/kg Specification:Durable,High tear strength for replication,Non-shrinkage,High simulation E-640 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 Tel: +86-755-89212380 Fax:+86-755-89948030 Mobile：18938867547 E-mail： hyjwya@szrl.net plex design. www.szrl.net