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From March1-16, a training was held for specialists of Shebekinskaya industrialnaya khimiya, LLC(Russia) at the company Dowell (China). Articles were developed for the tasks of the tanneries: "Universal crust" in thickness of 1.3-1.5mm, "Black crust for milling" in thickness of 1.3 -1.5 mm, "White crust for milling" in thickness of 1.3 -1.5 mm, "Crust" for the article "Floater". The following products were used in the recipes: a series of acrylates to obtain a uniform leather structure, an aldehyde tanning agent for grain tightness, and a series of synthetic fat liquors to obtain elasticity and uniform grain when milling. A set of chemicals with high light resistance was used in the recipe of white crust....