Peb Daim Ntawv Pov Thawj

Kev tswj hwm kev ua haujlwm tau ntawv pov thawj, high-tech enterprise ntawv pov thawj, daim ntawv pov thawj tawg-pov thawj hauv tebchaws, thiab ntau tshaj li daim ntawv pov thawj patent.