It is forged by special alloy steel with high intensity and high toughness, and then it is heat treated; It can be matched with G100 chain; The performance is increased by 25% compared with G80 products; Each work piece should pass testing at 2.5 times of working load limit; We should carry out sampling and 20000 times of fatigue testing; We should carry out strict sampling and breakage testing for each batch of products; We should carry out 100% magnetic powder flaw detection; 100% of the pin should be tested to ensure that they have the same hardness; Surface treatment: Powder plastified; Color code: Blue RAL5015, other colour is available as per request; It is equipped with a spare part, cast latch.