Cov chocolate pwm yog siv rau chocolate thiab qab zib molding, cov ntaub ntawv yuav ua tau silicone thiab polycarbonate, uas yog cov zaub mov qib.Ntawm, cov duab thiab loj tuaj yeem kho raws li cov neeg siv khoom xav tau.
Cov yam ntxwv ntawm pwm yog qhov kub thiab txias tsis kam, ruaj khov, lub neej ntev, thiab lwm yam.