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DIFFERENCE BETWEEN PRE-GALVANIZED STEEL TUBE AND HOT-GALVANIZED STEEL TUBEHot dip galvanized pipe is the natural black steel tube after manufacturing immersed in the plating solution.March 1,2022- Arbor Day-Everyone has a responsibility to protect the environmentOn March 12, 2020,March 12,2021
We will usher in the 42nd Arbor Day after the founding of New China.
This day, I planted a sapling by myself,
It is planting a green hope.
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