Tsoom fwv ntawv pov thawj ------ Yison muaj 25 xyoo ntawm kev tsim khoom hauv kev lag luam suab, tau dhau qhov kev sim ntawm kev ua lag luam, thiab tau lees paub los ntawm tsoomfwv, thiab tau muab ntau daim ntawv pov thawj uas lees paub peb.
Export daim ntawv pov thawj ----- Hais txog kev xa tawm, peb pab txhawb nqa cov neeg siv khoom, thiab txhawm rau muab kev yooj yim xa tawm zoo dua, peb thov rau daim ntawv pov thawj khoom xa tawm tshiab txhua xyoo.
patent daim ntawv pov thawj -------Yison tau nyob hauv kev lag luam suab rau 25 xyoo, kev tshawb fawb ywj pheej thiab kev tsim kho, tsim kev ywj pheej, ywj siab pwm qhib, ywj siab tsim, thiab tau txais ntau tshaj 50 daim ntawv pov thawj patent, thiab kuj tau txais ntau cov lus pom zoo. los ntawm cov neeg siv khoom.
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