Engineering Design Certificate
Kev Nyab Xeeb Ntau Lawm Daim Ntawv Tso Cai ntawm Kev Tsim Kho Enterprise
Tuam Tshoj Zog Txuag Khoom Certification
Kev ntsuas kev sib haum xeeb
Patent 2-Waterproof Insect Repellent Teeb
Patent 4-Solar Street Light Muaj peev xwm Purifying Cua
Patent 6-Waterproof Mosquito Repellent Teeb
Patent 8-Solar Teeb Muaj Peev Xwm Loj Loj Loj Loj Loj
Patent 10-Rotatable Txoj Kev Teeb
Patent 12-Protective Base Nrog Cia Ua Haujlwm
Patent 14-Solar Atmosphere Teeb
Patent 16-Energy-saving Txoj Kev Teeb Nrog Mosquito Repellent Effect
