Number of tanneries certified by LWG worldwide.
Among the tens of thousands of tanneries, only those that pass a thorough examination of energy and water usage, waste management, and working environment are eligible for the award. For this reason, it is said that 90% of candidates will fail on the first examination, so the examination is rigorous.

The average amount of water saved each year by LWG certified tanneries and manufacturers around the world.
LWG certified tanners account for approximately 23% of the world's leather production. Approximately 3.9 billion ft2 of leather. It continues to be reduced day by day through various capital investments and environmental considerations.

Kosei Leather Industry Co., Ltd. is the first tanner in Japan to obtain LWG certification and has now been promoted to the highest gold rank.
Until certification in 2018, it took two years to replace all equipment, replace chemicals, and manage work process data to optimize staffing, and we were able to provide sustainable leather.

In November 2018, we were the first in Japan to receive LWG certification. We have been consistently manufacturing leather for over 90 years since our establishment in 1928.
The entire production system, from raw hide procurement to finishing, is in place, and production recipes are fully digitized. Engineers are invited from Italy four to five times a year, and the finishing touches are a combination of world trends and Japanese expert technology.

Brooklyn Museum's ``Persimmon Shibu Dye'' is a leather that was revived through an encounter with the company.
This leather is a beautiful expression of tannery techniques that are as environmentally friendly as possible and traditional techniques that have been passed down for thousands of years, and is something to be proud of to the world.