MDF is an engineered material manufactured by hot pressing hardwood fine particles mixed with wax and resin binder.
HMR board is made by adding a special resin to the board which gives it extra moisture resistance.
HDF is an engineered wood product that is manufactured by hot pressing wood fibres that are extracted from wood chips, and binding them into a board at very high pressure using synthetic resins and binders.
Shutter board is a specially formulated composite panel board. The board is finished with phenolic overlay and its edges sealed.