Major Accident of 2 chain falls 3T electric chain hoist

Dear Mr. Yang,

During the running condition of machine along with Electric Chain hoist, we used hoist for lifting of beams as we doing same as regularly practice, suddenly the chain broken , beam felt down beam completely broken and damage the machine parts as well ,one of our colleague also safe from this accident kindly justify who are the responsible of this big accident if someone life hurts. I am attaching p pictures of parts which broken completely and we want you to justify metallurgy you use to make the chain and other major parts , also provide the damage parts for running the production as after accident its affect production badly.

Please justify the life of major parts like chain, Chain guider to secure this type of accident in future.

We are hoping positive response from your side as usual.

RAMHOIST: the chain was twisted there, and it was not returned to normal and pulling to hoist body, then lead to be broken, 2 fallchain was turned 180 degrees by your worker, the chain was distorted there, It's invisible to the naked eye, see attached