This product can not be used for objects requiring durability such as engine. I burned at about 3000 Km for 50 hours. Because there is no play such as clearance increase, it is considered that there is a big problem in the dimensional accuracy of the product. Depending on the application, it is a very dangerous product, so please strictly use setting and use rating notation.
It seems to be quality which is comparable to that of major manufacturers. Considering it as a consumable item, it is a sufficient level. Regarding durability, although it will be confirmed from now on, it seems to be more reliable than things made in foreign countries.