【正文】 ertification mark The products listed in this Rules shall not be allowed to use any derivations of certification mark. Ways of use Any of the following three ways is required: affixing standardsize marks (labels) printed uniformly by CNCA, printing on the nameplate or molding. Location of the markThe certification mark shall be applied on an exposed location on the outer body of the product.7. ChargeThe certification shall be charged by the certification body according to the national statutory structural fee chart.30 / 30Appendix I List of the Definition of application unit of Audio amp。 Video products for pulsory certificationNo.ProductsPrinciples of the definition of application unitStandards1Powered sound boxes with single or multiple speakers1) The application samples, with the same electrical circuit, safety construction, and the same critical ponents in terms of safety and EMC (Components with star * mark in Appendix III), but different only in output power, may be put in the same application unit.2)According with requirement of item 1), Powered sound boxes with single or multiple speakers have different amount passive boxes could be in one application unit.3)According with requirement of item 1), Powered sound boxes with single or multiple speakers have different input power could be in one application unit. The max input power sample should be submittedGB8898GB138372Amplifiers1) The application samples, with the same electrical circuit, safety construction, and the same critical ponents in terms of safety and EMC (Components with star * mark in Appendix III), but different only in output power, may be put in the same application unit.2) According with requirements of item 1),the amplifiers have different input power could be in one application units. The max input power sample should be submittedGB8898GB138373Tuners, radio receivers, audio/video recorder/player/dealer with kinds of carrier media, video recorders/players1) The application samples, with the same electrical circuit, safety construction, and the same critical ponents in terms of safety and EMC (Components with star * mark in Appendix III), but different only in output power, may be put in the same application unit.2) According with requirements of item 1), the application samples have different input power could be in one application unit. The max input power sample should be submittedGB8898GB138374Combinated music system1) The application samples, with the same electrical circuit, safety construction, and the same critical ponents in terms of safety and EMC (Components with star * mark in Appendix III), but different only in output power, maybe put in the same application unit.2) According with requirements of item 1),the application samples have different input power could be in one application unit. The max input power sample should be submitted3) The bo music system is posed of several units, if the separate units could be powered with AC mains and sold independently, they should be applied separately4) The bo music system is posed of several units. There is only one unit connected to the AC mains, the other units is powered by that unit. The bo music system which contains most units should be submitted.GB8898GB138375Power adapters for audio/video products1)Power adaptors according to working modes : linear power supply。 switching power supplyPower adaptors according to functions : AC/DC, AC/AC, DC/DC, DC/AC Products with different working modes or functions shall be in different application units.2) Products, with the same electrical circuit, safety construction, and the same critical ponents in terms of safety and EMC (Components with star * mark in Appendix III), although different in model types, may be put in the same application unit.3) Products with different construction or dimension shall be in different application units. GB8898GB138376Color/Bamp。W or monochrome television receivers and display monitors with kinds of display types (including LCD, PDP and front/back projector)1) Products, with the same display construction, the same dimensions of CRT, the same power supply, the same critical ponents in terms of safety and EMC (Components with star * mark in Appendix III), the same electrical structure with regards to safety and EMC, may be put in the same application unit.2) Products are in the same application unit, only if power supply and the control circuit of LCD for LCD display or Plasma display are the same. 3) Products are in the same application unit, only if power supply and critical ponents of PDP are the same, maybe different in the sizes of display. And the largest size of display is required as representative model for type testing. 4) Different application unit for different power supply5) Different application unit for different construction6) Different application unit for different dimension of CRT tubes7) Different application unit for monochrome TV and color TV.GB8898GB138377Video Projector1) Products, with the same projecting mode, the same safety construction, the same power supply, the same critical ponents in terms of safety and EMC(Components with star * mark in Appendix III) and the same electrical principle with regards to safety and EMC, may be put in the same application unit.2) Different application units for different projecting modes 3) Applying respectively when power supply is different.4) Applying respectively when construction is different.GB8898GB138378CRT tubes (greater than 16cm)1)Have the same size of the diagonal demission and the same construction.。Have the same glass materials and suppliers。Have the same tension band and the some connection construction and connect board materials。Have the same key assemble and producing process concerning safety performance。2) Type testing should