As several comments, the term "Excellence" does mean laugh. This is of poor quality goods.
The SAV Amazon remains inflexible and evokes the manufacturer's warranty 1 month, ignoring altogether the Act consumption of 17 March 2014 (called "Hamon Law").
The only proposed solution: contact the manufacturer ... Shameful.
Then, indeed, the price of this product may seem attractive at first, but if the lifetime is equivalent to the guarantee, ie 1 year, this set of disposable knives is very (very) expensive.