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■ Finely stretched grain is a distinctive sign of high-grade leather. However, as implementation of products and processes that improve compactness of leather, accumulation of too many astringent tanning agents and inorganic salts have caused leather grain to converge, rough and unclear, which reduces appearance, feeling of leather greatly and affect leather yield directly.
■ As a liquid synthetic tanning agent, DESOATEN BTL avoids introducing too much inorganic salt firstly. The product itself can avoid excessive convergence on grain through precise control of tanning properties. In addition, the use in different processes can also reduce excessive effect of other tanning agents on grain through appropriate buffering and dispersion, which can maintain smoothness and stretch of grain, and have a very good effect on stretch of leather as well.