Qunfeng Intelligent Machinery,as the leader of block making machine in China,has 7000 clients from 94 countries in the ... world. Our company is special in concrete block making machine,We use Siemens PLC & touchscreen, Schneider contactor and thermorelay, Omron ... & Green Block Conveyor . High technology,high quality,and versatile,this machine can be fit with the block stacker as the simple ...