Pre-laid Cable Duct, that is, high-density polyethylene built-in optical cable silicon core tube, also known as "PCD". It refers to the production of silicon core tube products at the same time, through a reliable process to safely synchronize the cable through the special equipment device into the

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As we all know, the selection of raw materials has a great impact on the characteristics, load-bearing level and service life of the telecom fiber vaults. So what are the common raw materials for draw pit chamber? Generally speaking, there are three materials: PE, BMC, and SMC material.