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Spain's main mineral reserves: 8.8 billion tons of coal, 1.9 billion tons of iron, 500 million tons of pyrite, 4 million tons of copper, 1.9 million tons of zinc, and 700000 tons of mercury. The total forest area is 15 million hectares, and the forest coverage rate is 30%. The output and export of softwood ranks second in the world. Madrid, the capital of Spain, is a famous historical city in Europe, with an urban area of 607 square kilometers and an urban population of 3.233 million.Follow Waterproof casing rest assured suppliers Zhongyuan valve fittings Spain network publicity site to learn the common Spain regional knowledge: With a history of more than 400 years, it is the political, cultural, economic and financial center of the country. Madrid is the comprehensive economic center of Spain's Central Economic Zone and the center of transportation, logistics, research and development, consumption and high-tech industries. Madrid has developed communication and transportation in the city. The total length of 13 subway lines in the city is 226 kilometers; There are 36 ancient art museums, more than 100 museums, 18 libraries and more than 100 sculpture groups in Madrid, the largest autonomous university in Europe.Waterproof casing supplier Zhongyuan valve fittings is located in East Asia, China, bordering the Pacific Ocean, and the China-Europe train runs through the country. Zhongyuan valve fittings has a designated service team for Western Europe Waterproof casing customers, which can provide reliable Waterproof casing aviation solutions for Spain Waterproof casing customers!