The “Ryuga” Tools are produced in China, under “OEM” quality for the Japanese market, by a first-class garden tool factory. These are the first tools from this factory (a subsidiary of the YM group) to be marketed outside Japan. RYUGA tools follow production and quality control with Japanese standards.

Quality Control Method

In the initial production process of Bonsai tools, the metal parts must be properly hand-cast before being molded. The heating necessary for shaping the cutting area is applied exclusively to that area, not affecting the handles, to ensure the final strength of the tool.

Another important step is the oil cooling process to harden the blade part. Any defects resulting from an incorrect casting process will severely affect the blade quality, which may end up breaking. In fact, there is no technique that ensures correct casting of the piece before the oil cooling process. Thus, a good control method is crucial to confirm the final quality of the tool.

The "Ryuga" tools follow high quality parameters set by the manufacturer, to simultaneously ensure material quality consistency as well as its functionality.

After the cold oil treatment, each part of the tool undergoes a pressure test to ensure the blade quality as shown in the image below.

Only parts that pass this test continue the finishing process. Each piece is subjected to a second pressure test, ensuring the quality of the entire piece, especially the handles. The handles must not bend after strong pressure...

Done? ...NO!

The final test must be the functional test... cutting dry wood to ensure the cut result is sharp and clean in the middle, and that the handles do not bend...

Any inferior quality will compromise the cut result, break the tool, or open the blades ...

These rigorous quality control procedures are carried out on all different models of “Ryuga” tools before shipment, including scissors.

We hope this has helped you choose the best Bonsai tools.

Text translated from the original Ryuga page (http://ryugabonsaitools.blogspot.pt/)