PISTON FILLER-kua twj tso kua mis

Lus piav qhia luv luv:

Rau cov kua filling, pastes hom.
Los ntawm piston tsav lub tog raj kheej kom tswj ntim.
Semiautomatic pub kua nrog pedal hloov lossis tsis siv neeg timer;kuj tuaj yeem ua synchronized nrog lwm lub tshuab ntim khoom tsis siv neeg li dosing unit rau cov kua sib txawv.