Answers

2016-03-23T13:05:49+05:30
The conditions are
when the vendor's become more greedy for the money
the next thing when the product  doesn't sale much
when customer's also expect something new from the market's
to satisfy the customers even the vendors opt shortcut technique


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2016-03-23T15:17:25+05:30
Because it is not clean a lot of garbage
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