1,
under normal circumstances oil-free bearings in the regular
manufacturers of the brand has its own design and design of external
packaging design, and arrange the production conditions of the factory
to produce production, therefore, the product packaging from the line to
the color should be Is very clear and unambiguous
2,
steel printing is clear: each bearing products will be printed on the
body of the bearing body with its brand name, label and so on. Although
the font is very small, but the regular manufacturers of products
produced by the use of stamp printing technology, and before the heat
treatment before the pressure word, so the font is small, but concave
deep, very clear. And usually, counterfeit products, the font is not only blurred,
because the printing technology is rough, the font floating on the
surface, and some even easily can be wiped by hand or hand traces of
serious
3,
whether there is a noise: left hand holding the oil-free bearing the
body, the right hand toss the jacket to rotate, listen to the bearing
during the operation of whether there is a noise. As
most of the counterfeit products production conditions behind,
completely hand-workshop operation, in the production process will
inevitably be incorporated into the dust, sand, a class of impurities,
so when the rotation of the bearing will appear when the noise or run is
not smooth The This
is to determine whether the product from the strict production
standards, and the use of machine operation of the regular manufacturers
of the key brand products.
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