About YAMAUCHI SHIGENORI
About 住友軽金属工業技研
About SATO SHIRO
About 住友軽金属工業技研
About literature review
About Corrosion
About Water supply source,intake,water conveyance,water distribution,water supply
About Piping fittings,valves
About 淡水
About 銅管
About 腐食