Currently, YYA has been in Heilongjiang, Jilin, Liaoning, Hebei, Henan, Ningxia, Xinjiang, Gansu, Shanxi, Shaanxi, Henan, Shandong, Tianjin, Anhui, Jiangsu, Zhejiang, Hubei, Hunan, Jiangxi, Guangxi, Guangdong, Fujian, Hainan. Widely used in other places, solved many engineering problems, and is well received by the market.