1. Kev luam ntawv zoo: cov qauv thiab cov ntawv sau tau raug luam tawm kom meej, chromaticity zoo ib yam, thiab qhov ci ntsa iab; txoj hauj lwm luam ntawv yuam kev tsis pub tshaj 7 hli rau cov thawv loj thiab 4 hli rau cov thawv me me;
2. Sealing zoo: tsis muaj qhov khoob nyob ib puag ncig ntawm lub thawv, thiab tsis muaj qhov tsis sib xws thiab sib cais tom qab lub hau kaw;
3. Dimensional tolerance: The inner diameter of the box and the design dimensional tolerance should be kept within ±5mm for the large box and ±3mm for the small box, and the overall dimensions are basically the same;
4. Tus naj npawb ntawm cov sij hawm npog folding: lub corrugated lub thawv npog yog folded ntau tshaj 5 zaug los ntawm kev qhib thiab kaw 180 degrees, thiab tag nrho ntev ntawm cov kab nrib pleb hauv txheej txheej thiab sab hauv txheej ntawm thawj thiab thib ob - chav kawm lub thawv, thiab cov txheej sab hauv ntawm peb -chav kawm lub thawv tsis ntau tshaj 70mm;
Tsis tas li ntawd, qhov kev sib koom ua ke yuav tsum tau ua, cov npoo zoo huv si, cov ces kaum tsis sib tshooj, thiab lub npov saum npoo tsis pub muaj kev puas tsuaj lossis stains, thiab lwm yam.
