In his farewell address, former President Moon Jae-in said that all people came together to overcome the crisis caused by Japan's unfair export restrictions. However, looking at the data, of the three export control items, hydrogen fluoride has decreased by ８６% compared to fiscal ２０１８, while other items such as photoresist and fluorinated polyimide have remained almost unchanged.
Japanese hydrogen fluoride has few impurities
Former President Moon Jae-in has loudly declared that hydrogen fluoride has been successfully domestically produced, but regarding the quality of hydrogen fluoride, it is Japan's hydrogen fluoride is １２N (９９.９９９９９９９９９９%). There is talk that hydrogen fluoride, which is said to have been developed by Korea's LG Chem, may be ５N. ~N is the number ９, and １２N is １２×９. In other words, Japan's hydrogen fluoride has as few impurities as １２ nines in a row.
Relationship between hydrogen fluoride and defective rate
Hydrogen fluoride is used to clean machines and processes used in precision machinery manufacturing. What happens when there are many impurities here is an increase in the product defect rate. What about the defective rate of Korean products? Whether it went up or down, if there is no change, then whether it is １２N or not has little meaning.
Massive recalls in America
On August ２０, ２０２１, the US automobile giant General Motors (GM) expanded the scope of the recall due to the risk of fire in the battery pack installed in the electric vehicle (EV) “Chevrolet Bolt EV”. announcement. As a result of this announcement, all models of the Chevrolet Bolt EV released so far are subject to a recall. The battery manufacturer for this car is LG Chem.
Kona EV explodes and catches fire again
In January ２０２２, another fire occurred in the Kona EV, in which Hyundai Motors had replaced the battery due to a recall after a series of battery fires. A fire broke out while the vehicle was running and was completely destroyed. According to Korean media, internet communities, and fire authorities, a fire accident occurred in a Kona EV that was traveling on Taean Road in South Chungcheong Province at around ６:４６ pm on the １１th. The accident vehicle was a ２０２０ model, and the battery had been replaced due to a recall in September last year.
Don't worry about car explosions
The explosion of lithium-ion batteries was a hot topic in the past when a Sumsung smartphone exploded into flames, but now that EV cars are being developed, the large batteries used to drive the car explode and burst into flames in the blink of an eye. It is unclear whether it has anything to do with hydrogen fluoride, but there is even a rumor that some Japanese-made hydrogen fluoride is being imported from China.
It would be surprising if they were going to such lengths to protect the country's face-to-face contact, but we should continue to pay close attention to defective products from South Korea.
