Safety note | 2021 safety note professional practice construction safety video with handout (Wang Ke)

Please click the above basket to pay attention ↑ the original materials are free ↑ there are more daily benefits for yourself         ↑ welcome to the safe communication group ↑      【 [data body] Introduction to data acquisition and retrieval methods pay close attention to sister numbers to prevent loss of contact

. Fixing Socket Cross Hole Nail Plate

You are welcome to “like forwarding” to promote safety knowledge and make good friends   Point“

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