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HDD Machine industry related News--the second line of PetroChina's West-East Gas Pipeline from Guangzhou to Nanning Branch started production. So far, all the 1 main line and 8 branch lines…
HDD Machine industry related association--this year, three other national or regional Trenchless Technology Associations joined the International Trenchless Technology Association (ISTT), including the first Trenchless Technology Association in the Middle…