1. Ħares lejn id-dehra. Il-kliem u l-marki tal-istampar jew tal-ikkastjar fuq id-dehra tal-aċċessorji oriġinali huma ċari u formali, filwaqt li d-dehra tal-prodotti foloz hija mhux maħduma.
2. Skond il-kulur, il-wiċċ ta 'xi partijiet oriġinali għandu jkun speċifikat b'ċertu kulur. Fil-każ ta 'kuluri oħra, huma partijiet foloz u shoddy.
3. Ħares lejn in-nisġa. Il-materjali tal-aċċessorji oriġinali huma materjali kwalifikati skont ir-rekwiżiti tad-disinn, u ħafna mill-prodotti foloz huma sostitwiti b'materjali irħas u inferjuri.
4. Ħares lejn in-negozjanti illegali li sempliċiment jipproċessaw il-partijiet tal-iskart, bħal żarmar, assemblaġġ, assemblaġġ, pittura, eċċ., U mbagħad ibigħuhom bħala prodotti kwalifikati biex jiksbu profitti għoljin illegalment.
5. Look at the "engagement". If the rivets of the clutch plate are loose, the brake hose is degummed, the joints of electrical parts are desoldered, and the joints of the paper filter element are separated, it cannot be used.
6. Look at the identification. Some regular parts are marked with some marks, such as timing gear mark, piston top mark and other assembly marks, which are used to ensure the correct installation of parts. If there is no part, you can't buy it.
7. Look at the "storage" of auto parts. If there are problems such as dry crack, oxidation, discoloration mirror or aging, it may be caused by poor environment, long storage time, poor material itself and so on.
8. Meta wieħed iħares lejn l-ippakkjar, l-ippakkjar ta 'aċċessorji oriġinali huwa ġeneralment standardizzat, speċifikazzjonijiet standard unifikati, u l-istampar huwa ċar u formali. Madankollu, l-ippakkjar u l-istampar ta 'prodotti foloz huwa relattivament fqir, u ħafna drabi huwa faċli li ssib difetti fl-imballaġġ.
9. Xi partijiet importanti, speċjalment assemblaġġi, bħal karburaturi, distributuri, ġeneraturi, eċċ., Ġeneralment huma kkonsenjati bi struzzjonijiet u ċertifikati biex jiggwidaw lill-utenti fl-installazzjoni, l-użu u l-manutenzjoni. Jekk ma jkunux, huma l-aktar prodotti foloz u shoddy.
10. Look at the protective layer. In order to facilitate storage and prevent parts from bumping, the parts have protective layers before leaving the factory. For example, bushings, large and small bearing shells, pistons and valves are generally protected with paraffin to avoid surface damage. If there is no protective layer on the surface of these important accessories, they are mostly "parallel goods".
11. In order to ensure the smooth posturing and normal operation of the vehicle, the normal assembly parts must be complete and intact. Individual small parts on some assemblies are missing, which are generally "parallel goods", which makes it difficult to load. The whole assembly is often scrapped due to the shortage of individual small parts.
12. Meta tixtri partijiet tal-karozzi skont l-ispeċifikazzjonijiet, huwa meħtieġ li ssir taf il-parametri tekniċi ewlenin, u t-teknoloġija speċjali għandha tissodisfa r-rekwiżiti tal-użu. Id-dehra ta 'xi prodotti foloz u shoddy hija kważi l-istess bħal dik tal-prodotti reali, iżda mhix adattata biex tinstallahom. Huma jew akbar jew iżgħar. Huma dejjem mhux sodisfatti bl-użu tagħhom u jħallu perikli moħbija ta 'inċidenti.
13. Id-dehra ta 'prodotti b'abbilità fqira kultant hija tajba, iżda minħabba teknoloġija ta' manifattura fqira, xquq, toqob tar-ramel, inklużjonijiet ta 'gagazza, burrs jew ħotob huma faċli biex jidhru. Pereżempju, is-siegla taċ-ċilindru hija estruża u deformata, li hija faċli biex tikkawża ablazzjoni minħabba siġillar maħlul, li jirriżulta f'tnixxija taż-żejt, tnixxija tal-arja u tnixxija tal-ilma; Hemm burrs fuq il-wiċċ tax-xogħol tal-pistun u ċ-ċirku tal-pistun, li huwa faċli biex tiġbed iċ-ċilindru.