Kub Melt kua nplaum
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JL-555 kub yaj kua nplaum
JL kub yaj nplaum nplaum siv cov khoom hluavtaws siab heev nrog kev nrawm nrawm tom qab hloov chaw, yuav tsum tau ntxuav, muaj zog viscosity.20 ~ 30% ntawm kub yaj nplaum hmoov ntxiv, tag nrho cov nyhuv yuav zoo dua.
