16 Apr 2018
grey iron, nodular iron, malleable cast iron, vermicular cast iron, alloy cast iron, alloy steel, carbon steel, magnesium alloy, aluminum alloy, zinc alloy, copper alloy, etc. aeronautics, computer, communication, electronics, household appliance, etc. automobile, internal-combustion engine, ship machinery, construction machinery, heavy machinery, textile machinery, agriculture machinery, railway machinery, machine tools, general machinery, etc. valve, pipes and fittings, manhole covers, pump, heating and plumbing, hardware, etc....