according to zhifuzi's trademark classification query tool, lithium batteries belong to the 9 th category 922 group of trademarks. According to the 217 Nice Classification Table, the category 9 trademark details are mainly scientific, navigation, measurement, photography, film, optics, weighing instruments, measuring tools, signals, inspection (supervision), rescue (rescue) and teaching devices and instruments; Devices and instruments for processing, switching, transmitting, accumulating, regulating or controlling electricity; Devices for recording, communicating and replaying sounds or images; Magnetic data carrier, recording disc; Optical discs, DVD discs and other digital storage media; Mechanical structure of coin-operated starter; Cash register, computing machine, data processing device, computer; Computer software; Fire extinguishing equipment.

"Lithium battery" is a kind of battery with lithium metal or lithium alloy as negative electrode material and non-aqueous electrolyte solution. Lithium metal battery was first proposed and studied by Gilbert N. Lewis in 1912. In 197s, M. S. Whittingham proposed and began to study lithium-ion batteries. Because the chemical characteristics of lithium metal are very active, the processing, preservation and use of lithium metal have very high environmental requirements. Therefore, lithium batteries have not been used for a long time. With the development of science and technology, lithium batteries have become the mainstream.

Class C refers to the warehouse where the second item of Class C can be stored, which is defined from the perspective of fire hazard classification of the items that can be stored.

as for "fire rating", there is no such reference in the specification document. The "fire protection level" we often say should be a warehouse level that is comprehensively divided from fire resistance level, fire risk, building fire prevention distance, fire protection facilities and so on.

the fire hazards of goods stored in warehouses are divided into five categories: A-B-C-D-E, and the fire hazards of these five categories of warehouses are decreasing in turn. Flash point and lower explosion limit are important criteria for judging fire risk.