500,000 BC Chinese has discovered fire
40000 BC Being able the recognize hematite
6000BC Being able the heat up steel to 1230˚c
3000BC Chinese’s professional blacksmithing technology built up the foundation of blacksmithing later on
West Chou Dynasty Starting to blacksmithing with "Low temperatureReduction" skill. Chan Kuo Dynastygh Temperature Reductionsteel making technique, which was also known as "High stove raw metal".The Damascus steel made blade has already appeared during that time.
West Han Dynasty the “Chau steel” technique was invented
Southern and Northern Dynasty "Guan steel" technique was invented
1993AD Mr. Kuo successfully invented "folded Steel"
1998AD Mr. Kuo successfully invented "Adjustable pattern folded steel".
2002AD the "folded steel and pattern steel invent patent"has successfully passed.
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