... China. The company is one of the key manufacturers of open back presses of the country and is charged with the ... standard of presses. Its products JZ21, JZ21F, J23. KZ25, J21S, JZ21G, JZ21K, JZ31, JZ36 series presses, total up to more than 60 ... possesses a state-level laboratory of mechanical press testing. JS21 series open-type servo press