Nippon Paint NP DURA® Cr-free Primer is a high-performance, environment-friendly coil coating for construction. The new primer does not contain harmful heavy metal Cr (VI) compound and its VOC is far below the limits of the new national standard GB/T 30981-2020. The corrosion resistance of the product is comparable to those of chromium primer under the same testing condition. The product will greatly support coating applicators to simply coating process and increase line upgrade output. This series of Cr-free primer have high compatibility and are perfectly matched with existing topcoats and different types of substrates.