Every pesticide which is distributed, sold, or offered for sale within this state or delivered for transportation or transported in intrastate commerce or between points within this state through any point outside this state shall be registered in the office of the division of pesticide control, and such registration shall be renewed annually; provided that products which have the same formula, are manufactured by the same person, the labeling of which contains the same claims, and the labels of which bear a designation identifying the product as the same pesticide may be registered as a single pesticide; and additional names and labels shall be added by supplemental statements during the current period of registration.