Recently, at the “Cement Stabilized Base Construction and Three Asphalt Index Testing Competitions” held by the Lianying Management Office of the Longhuai Expressway Management Center of Guangdong Nanyue Transportation Investment & Construction Co., Ltd, the Longhuai Expressway JS4 Testing and Inspection Center of JSTI Group won the first group award in the "Three Asphalt Index Testing Competition." Two JSTI staff members Ou Guoxin and Liu Huilai both won the first prizes in the personal skill competition.