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.
a reciprocal state or relation. 2. reciprocation; mutual exchange. 3. the relation or policy in commercial dealings between countries by which corresponding advantages or privileges are granted by each country to the citizens of the other. Origin of reciprocity. Latin.