1. Mil-lat tal-ippakkjar ta 'partijiet u komponenti fil-fabbrika tal-ippakkjar, l-ispeċifikazzjonijiet ġenerali huma relattivament standard, it-tipa hija ċara u formali, u l-ippakkjar u l-istampar ta' prodotti foloz huwa relattivament mhux maħdum, għalhekk ħafna drabi huwa faċli biex issib difetti fl-imballaġġ.
2. Ħares lejn il-kulur u jassenja kuluri speċifiċi għall-wiċċ ta 'xi aċċessorji tal-fabbrika. Fil-każ ta 'kuluri oħra, hija parti falza.
3. F'termini ta 'dehra, id-dehra ta' aċċessorji tal-fabbrika jew il-funderija u l-marki huma ċari u formali, u d-dehra ta 'prodotti foloz hija mhux maħduma.
4. Il-pitturi illegali sempliċement jipproċessaw il-partijiet mormija, iżarmaw, ippakkjaw, jespliċitawhom u jsolvuhom, imbagħad ibigħuhom bħala prodotti kwalifikati u jiksbu profitti għoljin illegalment.
5. Ħares lejn in-nisġa. Il-materjali tal-partijiet tal-fabbrika huma kkwalifikati skont ir-rekwiżiti tad-disinn, u l-biċċa l-kbira tal-prodotti foloz huma sostitwiti b'materjali bi prezz baxx -u inferjuri.
6. Id-dehra ta 'prodotti b'abbilità fqira hija tajba, iżda minħabba teknoloġija ta' manifattura fqira, xquq, laqx, burrs jew tbenġil huma faċli biex jidhru.
7. Looking at the "storage" of auto parts, if there are problems such as drying cracks, oxidation, discoloration mirror and aging, it may be caused by poor environment, storage time, differences in materials, etc.
8. Look at the "connector". If the clutch rivets are loose, the brake leather pipes are degummed, the joints of electrical parts are desoldered, and they are separated from the paper filter joints, they cannot be used.
9. The regular components of the sign part are marked with assembly marks such as limited time gear mark and piston top mark to ensure the correct installation of components. You can't buy what you don't have.