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mon也是部长
welded steel tube/welded pipe
yiyiling1221
你好！墙有耳，壁有缝Walls have ears and walls are sewn
零下十三月
Pipe A pipe joints
hanzhe2013
中文：生命必须有缝隙，阳光才能照得进来。英文：Life must have gaps, and sunlight can come in.
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