Shanghai jian & mei is a pofessional manufacturer of high strength bolts more than 8 years.They are include: Heavy Hex Structural Bolts, Heavy Hex Nuts, F436 Flat Washers, U-Bolts, Weld Stud with Ceramic Ferrule, etc
The Simpson Strong-Tie® Connector Lab is accredited in more than 20 international construction standards. Our engineers use the lab to test product prototypes and construction code criteria. Learn more about Simpson Strong-Tie® Connectors at https://bit.ly/1N0ebBd. For more information about our research labs, visit https://bit.ly/1SBtxJb.