Kev tshaj lij
Ntau tshaj 20 xyoo ntawm R & D thiab kev tsim khoom hauv kev ruaj ntseg & kev tiv thaiv teb
Kev tsim kho tshiab
Lub tuam txhab kev tshawb fawb thiab thev naus laus zis nrog ze li ntawm 100 patents, cov cim lag luam sau npe, thiab lwm yam cuab yeej kev txawj ntse
Pab neeg
Pab neeg ua haujlwm tshaj lij los muab kev muag khoom ua ntej, muag, tom qab muag thiab kev pabcuam kev pabcuam rau koj
Hom
Muab OEM / ODM, thiab siv zog los tsim peb tus kheej hom "WELKEN"
Khoom
Cov khoom lag luam zoo nrog tus nqi sib tw, ua raws li cov khoom lag luam nruj tswj cov qauv
Kev pabcuam
24-teev online teb, 1-xyoo tom qab-muag kev ruaj ntseg zoo, muab kev pab cuam spare
