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Drainage expert

  • Chang's High-rise Test Tower
    The Chang's Drainage Experiment Tower is the first 60-meter, 20-story, equal-scale simulation test device specifically designed for building drainage systems.
  • National Building Drainage Pipeline System Technology Center

    It is under the jurisdiction of the Architectural Water Supply and Drainage Research Branch of the Chinese Architectural Society. It is composed of 51 well-known experts and scholars nationwide and representatives of key enterprises of building drainage pipe production.

  • Drainage solution

    Chang's does not stop at producing high-quality cast pipe products, we can also provide you with a total solution for drainage systems.