The IWAI blacksmith company has been devoted to manufacturing knives for approx. 80 years from in 1939.
One of the promising blacksmith, Takeshi Iwai, received the certification of the youngest Traditional Craftsman of cutlery production industry in his 35 years old, in 2006.
His father, Takayuki Iwai, had also received the certification in 1994. It's the first thing that two generations are certified.
It's notable that they never use machines for mass production but their skilled hands, because they believe machine-made knives are often inferior than hand-made ones in quality.