proj4.defs("EPSG:3123","+proj=tmerc +lat_0=0 +lon_0=121 +k=0.99995 +x_0=500000 +y_0=0 +ellps=clrk66 +towgs84=-127.62,-67.24,-47.04,3.068,-4.903,-1.578,-1.06 +units=m +no_defs +type=crs");