... cost increased; Specially desigened rucksack frame for the home lift with traction tatio 1:1; VVVF drive technology, ... not have any load; We apply 220V single-phase home lift special machine; Automatic special door machine, synchronous timing belt ... transmission, TUV CE Certification poaaed; Comply with 'Home Lift National Standard GB/T21739-2008'. Specification: The humanized interface ...