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Bamboo Bridge Su Tong-pe across the beautiful green rice fields in the rainy season at Mae Hong Son Province, Thailand
Electrofusion welding device cables. A coupling on a yellow polyethylene (PE) natural gas distribution pipe in the trench is joined to the main pipeline using electrofusion welding.
The technical staff installs a brass valve connected to a yellow polyethylene (PE) natural gas pipe in the natural gas box outside the building before the meter or regulator is installed.
Woman as a sports teacher shows children an exercise with tires in physical education
Young trainer helps the injured boy at the school gym

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