As used in this article, “supplies” includes goods, wares, merchandise, and manufactures.

Price, fitness, and quality being equal, any body, officer, or other person charged with the purchase, or permitted or authorized to purchase supplies for the use of the state, or of any of its institutions or offices, or for the use of any county or city shall always prefer supplies manufactured or produced in the state, and shall next prefer supplies partially manufactured or produced in the state.

All State, county, or city officers, all bodies, and other persons charged with advertising for supplies shall state in their advertisement that such preferences for California-made supplies will be made.

In any advertisement for supplies no bid shall be asked for any article of a specific brand or mark nor any patent apparatus or appliances, when such requirement would prevent proper competition on the part of dealers in other articles of equal value, utility, or merit.

Public officers and bodies charged with the letting of contracts for public work, with the construction of public bridges, buildings and other structures, or with the purchase of supplies for any public use may give such contracts and purchase such supplies from persons manufacturing in the State the supplies to be used pursuant to contract or the supplies to be purchased if: