The factory is a piece of glass each have 3C, two steel angle that the two pieces of glass that have marked 3C, 3C is the steel into the glass, with the things that can not afford to engage in, in order to demonstrate is not really toughened glass (see glass edges are not as wavy lines ~~~ steel flower glass wavy line is, if it is very straight --- that is, ordinary glass, if there are scratches, certain requirements to replace 8mm tempered glass surface Inga style process or scratches caused by improper operation, bombing mouth, deep explosive edge tempered glass and other defects, could easily lead to stress concentration or cause glass blew. difference between glass and ordinary glass because glass has good mechanical properties and thermal stability So are widely used in the construction, transport and other fields. flat glass used for windows and doors of buildings, walls, walls and windows, furniture, etc., curved glass used in cars, trains and planes and so on. Use should be noted that the glass can not be cut, 12 grinding glass, not hitting the corners squeeze, adjustment or selection of ready-made sizes make specific design drawings into custom processing. for large areas of glass curtain wall of glass To be controlled on steel glass door, choose semi-tempered glass, that the stress is not too large, in order to avoid vibrations caused by wind loads and blew.