There was a difficult situation with the clamps of the anthers on the grenades purchased and installed from them, they constantly flew off. I filed a complaint with the hotline. They were invited to an inspection, and a couple of days later they called and informed the decision: to change to better grenades with an additional payment only for the difference in the price of grenades (1801 rubles for both), replacement is free. All the work was done in about an hour. There are no complaints or complaints, thanks to AutoInter.