proj4.defs("EPSG:8024","+proj=tmerc +lat_0=0 +lon_0=121.5 +k=1.00004949 +x_0=60000 +y_0=3800000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");