Nanjing Hairui Heat Preservation Material Limited Liability Company was established in March 2008. Main, rock wool board, glass wool insulation building materials, such as heartfelt thanks to new and old customers support and love, was established on July 1, 2014, the peak rock wool steel company headquarters in nanjing jiangning district headquarters on the 8th floor, quality after-sale to build a 5 star international reputation, "the pursuit of quality go beyond the ordinary" is the concept of rock wool, steel peak "diligently, strives for perfection" is our criteria.