Self-adhesive coils on analysis of ruby line mouth at the time of purchase.
Classification line mouth roughly divided into two categories, and Ruby line mouth increased in the past few years sales very, however, buyers in the purchase of such products, also met a lot of poor quality products, so the self-adhesive coils Xiaobian teach you how accurate were Ruby line mouth quality.
Firstly judging Ruby line mouth is good or bad, first of all to observe its shape,and now the market popular Ruby line mouth has two kinds, there are noshoulder and shoulder points, metal in observation bar parallel or not,determines the ruby line mouth head wall thickness and thickness. Itdetermines the thickness of material problem Ruby line mouth. So we can takethis point to purchase in the purchase of ruby line mouth.
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