Complete evaluation ensures level ground and compliance with safety criteria. http://congan.dienbien.gov.vn/index.php?language=vi&nv=statistics&nvvithemever=t&nv_redirect=aHR0cHM6Ly93d3cuZGFvZHV5dHUuZWR1LnZuL2ZvcnVtL2xpbmtzLnBocD91cmw9aHR0cHM6Ly9oYW1wc3RlYWRzY2FmZm9sZGluZy5jby51ay9pbmRleC5odG1s