Soil samples can be taken in which you can look for either residue of a chemical agent or the product's characteristic of when an agent degrades.

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The company crushes the mineral and blends it with a bonding agent to create a product it calls Silestone.

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The product has a repair agent which gives you the ability to diagnose and fix problems.

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The 1938 Food, Drug and Cosmetic Act bans the adulteration of food by any agent intended to dupe the consumer into thinking the product is superior in quality or more nutritious than it actually is.

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For every Chinese buyer who trusts a familiar brand or sales agent, many more will figure that a native developer has a better product.

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In the early 1980s, a high exchange rate, the product of tight fiscal policy and tight money, was the agent of recession and unemployment.

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