iMPREG only uses type-1140 unsaturated polyester resins of Table 3 in accordance with DIN 16 946-2, corresponding to Group 3 in Table 1 in accordance with DIN 18 820.

Heavy duty vinyl ester resins are used for industrial waste water that is under a particularly great chemical load and for waste waters with high temperatures.

The resin systems used are configured, depending on the impregnation process and area of usage, so that the end product achieves the best material properties. The impregnation carried out at the factory, which is monitored in accordance with current quality standards, ensures precise parameters for the end product and a consistently high product quality, whilst also protecting the environment, because no chemicals are handled on the job site.