Ancient mining machinery

1.

More than 200 people group is very common, the key depends on what kind of content you send. If you are doing maternity clothes, you go to the instrial proct group to send, but not eggs

it's better to use the keyword search mode to find groups for your own instry, which is more reliable. Don't ask me what is the key word, please fill it with your own network brain

it's better to rely on yourself than on others. The method teaches you, can see yourself

2. Ancient gold extraction method:
in ancient times, e to the underdeveloped science and technology, only high temperature (wood, a stove, or a pot) could be used to melt the ore that might be gold ore (ancient times also could not distinguish which kind of ore was gold ore), and then a self-made mold was used to load the melted ore solution with yellow color into the mold, This is ancient gold (because ancient times can not tell whether the ore is gold accuracy, so the purity is not high)
modern gold extraction method:
1. Grind the ore into powder, add HF and dissolve the stone powder with aqua regia< br />2 After complete dissolution, the excess water is evaporated by heating< br />3 Add concentrated sulfuric acid to form flocculent precipitation, and then add excess concentrated sulfuric acid after sufficient reaction. The reaction temperature should be above 90 ℃< br />4 After the reaction is complete, the precipitate 99 pure gold is separated and washed

this method is more accurate, so the concentration is higher, which can be said to be the gold sold and bought now.

3. Jiaozi is considered to be the earliest banknote in the world, which was issued in Cheng in 1023
according to the first edition of coins in xutongdian Shihuo of the Qing Dynasty, jiaozi should be held once every three years. The reason for this was that it was not easy to carry copper and iron coins in Song Dynasty; Until Shenzong, jiaozi was officially recognized by the government, that is, in the early years of Xining, forgery of Jiaozi was equivalent to forgery of official documents.

4. It's a low-end card. It's not a direct statement. See what you can do.

5.

Recently, a & lt; The collapse of the currency circle evaporates tens of billions of dollars; The news of, caused the hot discussion of broad netizens, make boiling on the net< so, how big is the risk of currency speculation? I will tell you from the following aspects. First, there is no rise or fall in currency speculation. As we all know, the main board of China's stock market is 10% up and down, and the gem is 20% up and down. There is a buffer time for sudden news in a single day, but there is no coin circle. Second, there is no supervision over currency speculation. You can see the latest operation of musk. In recent years, musk has been singing many times, leading to the sharp rise and fall of the currency price. Third, the speculation app has its own high leverage. Few people can resist the use of leverage, which can multiply the benefits and risks what is the specific situation? Let me share my views with you

We all know that our A-share market has a price limit. The main board can rise or fall by 10% in a day, and the gem and the science and technology innovation board can rise or fall by 20% in a day. If there is any unexpected news, it can have a buffer time. However, there is no such fluctuation in currency speculation. Sometimes, when there is a sudden news and no response, it will directly lead to position explosion{ RRRRR}

the above are my views on this issue. They are purely personal views and are for reference only. If you have any different opinions, you can leave a message in the comment area for discussion

6. 1. Exit from the exit of
C1
of
Xiangmihu subway station
2. After leaving the station,
face east
follow
Shennan Avenue
walk
125m
turn left into
Xiangmei road
3, follow
Xiangmei road
walk
182m
turn right into
Jingtian Nanqi Street
4, Follow
Jingtian Nanqi Street
walk
268m
to reach
Shenmao commercial center

7. Shenmao Business Center (Shenzhen) address: 59 Xinwen Road, Shenzhen City, Guangdong Province
http://map..com/#word =%C9%EE%C3%AF%C9%CC%D2%B5%D6%D0%D0%C4%B4%F3%CF%C3&ct=4&bs=020_ 10 & sid = mapeqvzpfaymzotalws & TID = mapbqvsbqwxelwx & LM = - 1 &
Route 1: start from Qiaocheng East, take Metro Line 1 (Luohu Metro Station - window of the world Metro Station) to Xiangmihu. About 4.62 km
Route 2: start from yuanboyuan, take route 109 (maritime world Huanggang port) to Xiangmihu. About 4.08 km
route 3: start from Konka Group East, Take route 319 up (Taoyuanju Yinhu bus station terminus) to Xiangmihu. About 4.53 km
Route 4: start from yuanboyuan, take route 223 down (Nantou terminus ningshui garden), and arrive at the special zone newspaper office. About 4.52 km
route 5: start from yuanboyuan, take route 234 down (Nantou railway station Meilin joint inspection station), About 4.52 km
Route 6: from yuanboyuan, take bus 59 (window of the world terminus - Buxin terminus) to Xiangmei (Shennan) intersection. About 4.35 km
Route 7: from yuanboyuan, take bus 350 (Lishan Instrial Park - Qinghu terminus) to Xiangmei (Shennan) intersection. About 4.35 km
route 8: from yuanboyuan, take bus 350 (Lishan Instrial Park - Qinghu terminus) to Xiangmei (Shennan) intersection, Take route 222 up (window of the world terminus Dexing garden) to Xiangmei (Shennan) intersection. About 4.35 km
Route 9: from yuanboyuan, take route 209 down (songpingshan terminus Shuibei terminus) to Xiangmei (Shennan) intersection. About 4.35 km
Route 10: from yuanboyuan, take route 210 up (Yueliangwan garden terminus bus terminal), Arrive at Xiangmei intersection in Shennan. About 4.47 km

8. Take bus No.54 from "Meilin checkpoint" to "special zone newspaper". It's only eight stops, about half an hour

operation time: 6:30-21:00 ticket price: cold bus 2 yuan, The whole course is 4 yuan
Meilin checkpoint Futian Party school ① intermediate court GuanShanYue Art Museum Lianhuashan Park Lianhuashan Shanxi Huaqiang vocational school special zone newspaper Xiangmihu Shennan Xiangmi interchange Shenhang building Zhuzilin yuanboyuan Kangjia group Jinxiu China He Xiangning Art Museum window of the world ① Baishizhou ② Baishizhou West Nanshan fire brigade Shahe Interchange - mixing plant - Longjing intersection - New Vehicle Management Office - Junxiu No.2 Institute - Guangqian village - Longjing North Road - longhui Garden - Zhuguang village - Xili Sports Park - Xili Hospital East - Xinwei village - Xili hospital - Vocational College West Campus - Nanshan Welfare Center - liuxiandong village - Xili liuxiandong

hope to help you!

9. Shenzhen Oriental Tendering Co., Ltd. (13th floor, block a, F, G, H)
Shenzhen Liaison Office of Huizhou Dongjiang Veolia Environmental Services Co., Ltd. (13th floor, block B)
Shenzhen huayitong business data Co., Ltd. (13th floor, Block E)