China lead-zinc mining, underground mining, but a few mining or open-pit mining for the first open-pit mining, underground mining and changed.
High power hot and cold fan, automatic air outlet, high wind force to dry nails, dry both hands Nail Dryer
Finish the nail polish and blow it dry with a Hair Dryer. Is the cold air blowing or hot air blowing?
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Underground mining, the current mining depth is generally 300 ~ 800m. The mining method, according to the topography of the deposit, the occurrence of the ore body, the scale and the depth of burial, usually use four methods: shaft, flat and joint development and inclined well development. Here are a list of 10 large mines, as shown in the table below: 
Answer: cold wind.
Hot air will slow the solidification of nail polish, so as long as you use the cold air of the blower, you can quickly dry nail polish.
Let nail polish dry quickly:
1, put the nail polish on the hand, put it under the tap for a minute, then put it into a cold water pot for a minute. It only takes two minutes. Nail polish will stick to the top and will not fall off.
2, the hair dryer has two functions of hot air and cold wind. We should choose the effect of cold air, blow it for one minute, and nail polish will be dry.
3, manicure quickly and dry, and protect manicure from falling off easily. It will make the nail look even more beautiful.
4, finally, teach you a most primitive way. In the absence of anything, smear nail polish, put your hands in the draught, next to the fans, and so on, all these places can be quickly dried.
