1 Check the weight.
2 Check magnetic reflection.
3 Check the hinge structure .
4 with a chemical reagent checked.
5 Test conductive index .
We can be a magnet placed on the table , sunrui titanium pump then leaned over the frame , if it is not generating the magnetic response
of titanium frames . Also check its hinge , titanium glasses are placed two plastic or metal liner in the hinge , in
addition , because of different metals with different electrical conductivity , so with conductive index can be
measured whether the sunrui titanium pumps titanium metal .
Now consumers in addition to care about aesthetics , but also pay great attention to security , such as European
countries have regulations, things come into contact with human skin items ( such as glasses , watches , necklaces ,
etc. ) , if necessary ingredient containing nickel marked . Because the nickel whites sometimes cause skin lesions
or skin cancer , so manufacturers and Sunrui aerospace investment casting stores have a duty to inform .
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