chemical storage system used, it is a structure completely made of stainless steel probably 316 formed by 3 insulated tanks A-B-C th. 3cm with a capacity of about 4000 liters which mutually contained: nitric acid, soda and water. the first two have a coil for managing the temperature with glycol water while the last is neutral. an inspection walkway with ladder with protective belt was mounted on all of them. dimensions: tanks Ø140cm h430cm, walkway 400/450X70cm h at the feet 280cm, total h 415cm. prices: tanks A and B €5,500.00, tank C €4,000.00, walkway €1,500.00, if you take the whole lot you spend €9,500.00 excluding VAT and transport