Why is there a Tough V4 resin at Preform? New formulation?

[reinerbenz]

Phasing out Tough V3

Typically, when we announce a re-formulation, it’s because we’ve made significant changes to a material. In the case of Tough Resin V4, it’s a bit different. Tough V4 will be available through our North American and International stores shortly and can be purchased in the EU thereafter. We switched suppliers for one of the components in Tough Resin and this is the reason for the re-formulation. Mechanical properties are nearly identical for both versions and the primary difference is a more bl…