... medical grade PS,we have many kinds of types:Side screw type: for european market and middle east market,and aftrica ... as French,Poland,EnglandHook type: for european market and South america market,such as Spain,PeruMiddle screw type: for Asia and ... eurepean market,such as EnglandHook button type: for Austrailia marketPull-push type: for America marketwe ...