For the huge bulky and difficult adjustment shortcoming of traditional end and side pipe stopper, the wide applicable scope end and side pipe stopper is designed.

  • 针对传统端、侧挡管器体积庞大、调整费时费力等缺陷,设计出一套使用范围较宽的端、侧挡管器。

  • 互联网摘选 2025-01-19 22:12:54

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