Polycarbonate Diols (PCD) are used for a wide range of polyurethane-based coating formulations, providing an extreme durability and a high performance to the final polymer. ok
In mathematics, a reciprocity law is a generalization of the law of quadratic reciprocity. There are several different ways to express reciprocity laws.
The norm of reciprocity, sometimes referred to as the rule of reciprocity, is a social norm where if someone does something for you, you then feel obligated to return the favor. One area where this norm is commonly employed is in the field of marketing. Marketers utilize a broad range of strategies to convince consumers to make purchases.