... oil which floats on the sea and sealing.In cement industry,,it has seal and friction use.Also the coloured wool ... from north to south.Its geographic position is ascendancy and come-and-go is convinent.The company has three divisions:industrial ... electronechanical,spaceflight, aviation,shipping,training,auto,metallurgy,chemical industry,cement,machine tool,printing, weave, etc. It is used as pressurize ...