Chinese postal service centennial

Article Abstract:

The Chinese Postal Service will issue four stamps designed with mail boxes and other postal paraphernalia on Mar 20, 1996 to honor its anniversary. A brief history of the service is recounted. Today the postal service is revamping its image in the face of competition from private companies.

China, Commemorative postage stamps

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A brief history of the Mexican postal system

Article Abstract:

POstal service in what is now Mexico began with the Aztecs, who had runners relay messages and packages between the Gulf of Mexico and Mexico City. The modern Mexican Servicio de Correos was established in 1790, four years before the US, with offices in the same two locations.

Mexico

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Older and wiser but copal also has a history of its own

Article Abstract:

Copal is a resin that is commonly used to create fake amber. In many forgeries, it is used the matrix while lizards or invertebrates are used as the inclusions. Compared to amber, copal is softer and melts faster.

Evaluation, Gums and resins, Natural resins, Vegetable gums

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