technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 電暖爐 個影片檔及 b 捲影像00:15
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 電暖爐 個影片檔及 b 捲影像00:08
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 電暖爐 個影片檔及 b 捲影像00:15
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 電暖爐 個影片檔及 b 捲影像00:15
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 電暖爐 個影片檔及 b 捲影像00:13
technician is checking air conditioner ,measuring equipment for filling air conditioners.(vdo4k) - 電暖爐 個影片檔及 b 捲影像00:15
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:23
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:17
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:18
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:21
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:12
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:13
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:14
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:14
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:15
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:10
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:15
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:23
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:18
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:16
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:18
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:21
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:09
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:18
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:15
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:16
two workers in a uniform and hardhat checking the power supply at the solar station in a solar farm. - 電暖爐 個影片檔及 b 捲影像00:11
engineer technician people working in powerhouse mdb main distribution board in solar farm. - 電暖爐 個影片檔及 b 捲影像00:13
two workers in a uniform and hardhat checking the operation of sun and cleanliness of photovoltaic solar panels in a solar farm.ecology concept. - 電暖爐 個影片檔及 b 捲影像00:11
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:12
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:14
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:21
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:12
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:18
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:11
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:11
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:21
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:15
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:25
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:19
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:21
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:11
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:21
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:16
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:21
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:15
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:21
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:23
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:07
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:23
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:27
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:27
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:20
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:14
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:13冷氣
technician is checking air conditioner. air conditioning, hvac service technician using gauges to check refrigerant and add refrigerant. - 電暖爐 個影片檔及 b 捲影像00:08
