A screw compressor is a type of positive displacement compressorthat uses two spiral screws to compress the gas. It uses a positive displacement rotary mechanism for the compression of gas. The scre.
[pdf] Our company is going international. As a professional manufacturer of drilling equipment, we can supply high quality crawler drilling machine, hydraulic drilling machine. JK Drilling has established a m.
[pdf] The Boyles C5/C5C surface core drilling rig is compact, yet powerful. Its compact design makes it easy to position and transport, even by helicopter. During helicopter transport, the rig is broken dow.
[pdf] 
