JJ-TEST was founded in 1994 and has been committed to R&D, manufacture and sales of mechanical property testing instruments for polymer materials and products. JJ-TEST provides complete set equipment for plastic pipes and engineering plastics, such as Hydrostatic Pressure Tester, Ring Stiffness Tester, Falling Weight Impact Tester, Universal Testing Machine, Melt Flow Indexer, Pendulum Impact Tester, HDT/Vicat Tester and so on.