Tag nrho cov khoom sib txuas sib txuas fiber ntau laser txiav tshuab nplua rau nruab nrab thiab siab zog, tsim kev nyab xeeb muab kev tiv thaiv zoo rau tus neeg teb xov tooj, nrog CE, SGS daim ntawv pov thawj.
Tag nrho cov khoom sib txuas sib txuas fiber ntau laser txiav tshuab nplua rau nruab nrab thiab siab zog, tsim kev nyab xeeb muab kev tiv thaiv zoo rau tus neeg teb xov tooj, nrog CE, SGS daim ntawv pov thawj.