linsen li (@li_linsen2015) 's Twitter Profile
linsen li

@li_linsen2015

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calendar_today22-01-2017 07:13:46

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People's Daily, China (@pdchina) 's Twitter Profile Photo
People's Daily, China
@pdchina

8 years ago

Self-charging robots sorting system helps Chinese delivery firm finish at least 200k packages a day in the warehouse youtu.be/_QndP_PCRSw