The company has invested nearly 10 million yuan to build a technology research and development center of more than 1,000 square meters, with an annual investment of 5%. The engineering technology center is composed of 8 polymer materials and construction engineering experts, engineering doctors, senior engineers and more than 20 research and development engineers. The average age is 30, with a bachelor's degree or above of 100% and a master's degree or above of 30%. We have rich theoretical knowledge and practical experience in the research and development of epoxy adhesive, curing agent and polyurea resin. There are five research departments and testing centers in the engineering technology center such as stone glue, decoration glue, construction glue and MS glue, which is rated as Changsha engineering technology center and Changsha enterprise technology center. We are preparing hunan enterprise technology center, and now it has developed more than 200 varieties of products, more than 60% have reached the international and domestic leading level, and five products are the first. At present, more than 30 patented technologies have been developed, 3 national standards have been drafted, and 5 national, provincial and municipal patent awards and scientific and technological progress awards have been obtained。