TPA nias
Cov hlau zoo yog muab tso rau hauv cov pwm hloov tau thiab tom qab ntawd cov roj lossis cov kua dej siab yog siv rau hauv pwm. Cov kab lus tshwm sim yog ces sintered nyob rau hauv lub cub tawg uas ua rau kom lub zog ntawm ib feem los ntawm kev sib txuas cov hlau hais.
Hais txog peb
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