Mixtures Rubber or semi-natural primary rubber product is a product derived from adding synthetic rubbers and/or chemicals into natural para rubber according to properties or characteristics based on the customer group’s requirements, and it is called “Mixtures Rubber”. The comparative testing standards of Mixtures Rubber are similar to Standard Thai Rubber, but different at testing parameters according to the additional mixtures. Product packaging is similar to briquette STR, but its colour code is differently defined.
Synthetic rubber is well resistant to abrasion, varied weather conditions, and electricity upon leaving for exposure to sun, air, ozone, gasoline, and oil. The rubber can be damaged. This rubber is also used for manufacturing rubber pipe, insulated floor, conveyor belt, package materials, and sole of a shoe.