Because of the widespread importance to the marketing of goods, raw materials, and agricultural products such as, but not limited to, grains, timber, logs, wood chips, scrap metal, oil, gas, petroleum products, coal, fish and other commodities, that qualitative and quantitative measurements of such goods, materials and products be accurately and honestly made, it is declared to be the public policy of this state that certain conduct with respect to said measurement be declared unlawful.