Precast concrete panel ‘Vibracrete’ walls were a staple when Concretex opened in 1973. A first for the company and to the entire precast walling industry was the introduction of the pre-stressed post uprights. This technology was introduced and perfected by Concretex in-house. This revolutionised the industry by providing a stronger, lighter support for pre-cast concrete walls. This had major repercussions throughout South Africa and this improvement is used throughout the country today.