Mexico has a 9,330 kilometer coastline, of which 7,338 kilometers face the Pacific Ocean and the Gulf of California, and the remaining 2,805 kilometers front the Gulf of Mexico and the Caribbean Sea.
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The first part consists of melt phase reaction used to produce copolymers with an intrinsic viscosity (IV) suitable for textile applications. But when very high molecular weights are desired, as is the case for bottle grade PET resins, the polymerization may be carried out in stages. The traditional Buhler process integrates four typical stages for producing bottle grade PET : crystallization, annealing, solid state polymerization (SSP) and cooling. New technologies are currently replacing this design with a tendency to reduce the number of units involved and thus the global process cost.