Nthawi zambiri mbiri aluminiyamu mafelemu chithunzi ali 3m, koma tikhoza kupereka zonse chisanadze kupanga ntchito makasitomala kwa kudula ndendende, kukhomerera, mphero, Machining, kupinda, Logo kudula ndi kunyamula pansi lamulo lapadera kuti apereke mtengo anawonjezera utumiki. kwa makasitomala.Setifiketi chimango angatchedwenso diploma chimango kapena chikalata chimango.Zofanana ndi chithunzi chodziwika bwino kapena chimango chazithunzi, chimango cha satifiketi chimagwiritsa ntchito mawonekedwe ang'onoang'ono azithunzi ndipo ndizosavuta komanso zosavuta kusonkhanitsidwa.Poyerekeza ndi chimango cha satifiketi ya pulasitiki, mafelemu a satifiketi ya aluminiyamu ndi owoneka bwino, owoneka bwino komanso okhalitsa, osavuta kusonkhanitsa, osagwirizana ndi dzimbiri, osagwirizana ndi nyengo, osavuta kupunduka, komanso osinthika, ndi zina zambiri, chifukwa chake ndi otchuka kwambiri m'malo mwa mafelemu a satifiketi ya pulasitiki.