National office post No. 8 document about improving quality of elvator, adjust scientific test method, carry out supervision and inspection, improve quality of test.

20kN, 50kN, 100kN, 200kN steel wire tensile testing machine, steel wire rope forward direction torsion testing machine, steel wire rope reverse torsion testing machine, steel wire repeated torsion testing machine, 0.5N.m – 2000N.m steel wire rope torsion testing machine, steel wire wrap testing machine, steel wire coating zinc adhesive testing machine.