PPR yeeb nkab muaj kev txhim kho corrosion, uas daws cov teeb meem ntawm xeb hauv cov kav dej hlau ib txwm muaj. Cov khoom tsis-polar ntawm PPR cov yeeb nkab zam kev tsis sib haum nrog lwm cov tshuaj lom neeg hauv dej. PPR yeeb nkab yuav tsis ntsuas thaum siv.
Dab tsi yog qhov zoo ntawm ppr kav nrog kev tiv taus corrosion
Apr 08, 2021
Xa kev nug