hello,safoura,firstly,not most of Chinese goods with low prices and low quality. i'm a mechanical engineer on industrial valve,and each time our Iranian clients came to verify products-valve,they put forward extremely strict product quality control procedures.you know,that really really really drove us crazy.(not talking details<img title="Laughing" src="http://www.italki.com/Scripts/tinymce/jscripts/tiny_mce/plugins/emotions/img/smiley-laughing.gif" alt="Laughing" border="0" />)

And cause such situation,one is many many many small retailer buy or sell without authorization;another reason is the government regulation.I understand your feeling,not only our country suffering the same thing,but also others'.