Why right angle shape glass and some special-shaped glass couldn't been made by tempered glass?

In the daily life, so many people would like special design for the glass shelf, glass tale top and other furniture filed. In order to Beautiful and fashionable and well-designed, these special  glass always been design right angle, special-shaped,etc. And consider to safety, they always required for these glass been tempered. But for our glass factory from the professional angle, we would like to explain that its couldn’t been tempered, the reason as follow: 


1.If some special shape glass on small radius less than 400 mm, its couldn't been tempered. 

2.If glass on right angle shape, its couldn’t been tempered, because of tempered machines'problem couldn't matching its required. 

3. For some irregular shape glass with one or more right angle only could make hot bending, couldn't been made tempered glass, because of the technical matter and tempered machine problem

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