Ppt | safety training for external construction personnel (page 72)

Flat End Socket Cross Pin

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

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.