1. Tsis txhob siv cov rigging puas 2, thaum lifting, tsis txhob twist, rigging 3, tsis txhob cia rigging knot 4, kom tsis txhob tearing sewing commissure los yog overload ua hauj lwm 5, thaum tsiv rigging, tsis txhob rub nws 6, kom tsis txhob muaj zog los yog poob siab load 7, txhua lub rig yuav tsum tau kuaj xyuas ua ntej siv 8, Polyester tiv taus ...
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