This is Jenny,fromyangyihardware.Our company are specialized in making door hardware.Such as kinds material of door hinges,door handle,door closer,door locks door bolts and door viewers.

Our spring hinge and door closer have got UL certification. Now we develop and make new item intelligent locks.
We all improve ourselves and fit for the market.Special requirement are satisfied with customers,For more information, pls visit our website.then let me know which particular items you are interested in.We also can follow your special requirements to customized.
Regards,
Jenny