National Certification Body of Jamaica
National Certification Body of Jamaica
Government of Jamaica 
Hollow concrete blocks(100mm, 150mm, 200mm)
Certification Mark Programme
Chudleigh, Manchester
6 Winchester Road, Kingston 10, Jamaica
Tel: (876) 618-5793, (876) 618-5789, (876) 632-4291 or (876) 632-4294
Email: info@ncbj.org.jm