California Code, Health and Safety Code - HSC § 12722

(a) Those fireworks that are sold, offered for sale, possessed, stored, used, or transported within this state prior to having been examined, classified, and registered by the State Fire Marshal, except those specific items designated as samples pending examination, classification, and registration by the State Fire Marshal where the licensee provides documentary evidence that the action by the State Fire Marshal is pending.

(b) All imported fireworks possessed without benefit of the filing of notices as required by this part.

(c) Safe and sane fireworks stored in violation of the conditions required by the permit as provided in this part.

(d) Safe and sane fireworks sold or offered for sale at retail that do not bear the State Fire Marshal label of registration and firing instructions.

(e) Safe and sane fireworks sold or offered for sale at retail that are in unsealed packages or containers that do not bear the State Fire Marshal label of registration and firing instructions.

(f) Safe and sane fireworks sold or offered for sale at retail before 12 noon on the 28th day of June or after 12 noon on the sixth day of July of each year.

(g) Each safe and sane fireworks item sold or offered for sale at retail that does not have its fuse or other igniting device protected by a cap approved by the State Fire Marshal, or groups of fireworks with exposed fuses that are not enclosed in sealed packages that bear the State Fire Marshal label of registration. The State Fire Marshal shall approve the caps as he or she determines provide reasonable protection from unintentional ignition of the fireworks.

(h) Dangerous fireworks, including fireworks kits, used, possessed, stored, manufactured, or transported by a person who does not possess a valid permit authorizing an activity listed in this part.

(i) Fireworks stored or sold in a public garage or public oil station, or on any premises where gasoline or any other class 1 flammable liquids are stored or dispensed.

(j) Fireworks still possessed by a person who has just thrown any ignited fireworks at a person or group of persons.

(k) Model rocket motors or model rockets with motors possessed by a person who does not hold a valid permit.

(l) An emergency signaling device sold, offered for sale, or used that does not bear the State Fire Marshal label of registration as required by this part.

(m) Fireworks or pyrotechnic device offered for sale by a person violating this part.