Shanghai ZnR Trading Corporation (hereinafter referred to as ZnR)is a professional roofing system integrator who focuses onproduction and R&D of roofing system accessories. We providehigh-performance products for the commercial and residentialroofing to make your roof ventilation, waterproof, reliable andbeautiful. Currently ZnR has two proprietary intellectual propertyrights-patent of invention, and multiple registered trademarks:R&C®, R&G®, Z&RTM, ARCHTM, Green RufferTM. System FeaturesTo reduce 50% load on roof by optimizing roofing architecturaldesign.To reduce roof energy consumption by using ventilation roofingdesign.To reduce almost 50% construction time and the dependence onexternal environment condition to save cost by dry-fix roofingdesign.Â