Acting-driven rope lifts, which deteriorated from use. The cause of the damage caused by the rope of elevator. We have not changed at all since the first to deteriorate, which makes the main sheave, we've changed the infants when the year 2011 with a life of approximately 5 years if not changed will affect the thrust of elevator running up and down time can affect the safety of the users. We have never changed the rope sheave, lifts the main point of this is to change, but the rope deteriorated make the lifetime of main sheave decay faster, 23.6.53., Mitsubishi, so we yonsaling and Li min peptide sheave, lifts, both the price and the number 1 baht which has been changed to 2.2 year THB.
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