资质认证
- IEC 60748-3:1986/AMD1:1991
- Amendment 1 - Semiconductor devices. Integrated circuits. Part 3: Analogue integrated circuits
- 1991-11-14
- IEC 61120-3:1991
- Digital audio tape recorder reel to reel system, using 6.3 mm magnetic tape, for professional use - Part 3: Format B
- 1991-11-14
- IEC 61120-2:1991
- Digital audio tape recorder reel to reel system, using 6.3 mm magnetic tape, for professional use - Part 2: Format A
- 1991-11-14
- IEC 60050-561:1991
- International Electrotechnical Vocabulary - Chapter 561: Piezoelectric devices for frequency control and selection
- 1991-11-14
- ISO 10500:1991
- Industrial tyres and rims — Cylindrical and conical base rubber solid tyres (metric series) — Designation, dimensions and marking
- 1991-11-13
- ISO 6702-1:1991
- Aircraft — Requirements for on-board weight and balance systems — Part 1: General
- 1991-11-13
- ISO 10066:1991
- Flexible cellular polymeric materials — Determination of creep in compression
- 1991-11-13
- ISO 6702-2:1991
- Aircraft — Requirements for on-board weight and balance systems — Part 2: Design, performance and interface characteristics
- 1991-11-13
- IEC 60601-1:1988/AMD1:1991
- Amendment 1 - Medical electrical equipment - Part 1: General requirements for safety
- 1991-11-12
- IEC 60601-1:1988/AMD1:1991
- Amendment 1 - Medical electrical equipment - Part 1: General requirements for safety
- 1991-11-12
- IEC 60601-1:1988/AMD1:1991
- Amendment 1 - Medical electrical equipment - Part 1: General requirements for safety
- 1991-11-12
- ISO 6140:1991
- Aluminium ores — Preparation of samples
- 1991-11-06
- ISO 10626:1991
- Equipment for crop protection — Sprayers — Connecting dimensions for nozzles with bayonet fixing
- 1991-11-06
- ISO 789-7:1991
- Agricultural tractors — Test procedures — Part 7: Axle power determination
- 1991-11-06
- IEC 60382:1991
- Analogue pneumatic signal for process control systems
- 1991-10-31
- IEC 61105:1991
- Reference tapes for video tape recorder systems
- 1991-10-31
- IEC 60050-811:1991
- International Electrotechnical Vocabulary - Chapter 811: Electric traction
- 1991-10-30
- ISO 789-8:1991
- Agricultural tractors — Test procedures — Part 8: Engine air cleaner
- 1991-10-30
- IEC 61120-1:1991
- Digital audio tape recorder reel to reel system, using 6,3 mm magnetic tape, for professional use - Part 1: General requirements
- 1991-10-29
- ISO 8615:1991
- Implants for surgery — Fixation devices for use in the ends of the femur in adults
- 1991-10-23
