Seat and Seat Headrest Products for Motor Vehicles-Implementation Rules for Compulsory Certification of Motor Vehicle Products 

No. CNCA-02C-063:2005

 Seat and Seat Headrest Products for Motor Vehicles

Implementation Rules for Compulsory Certification of Motor Vehicle Products

 Issued on Oct 10th 2005                       Effective on Dec 1st 2005

Issued by the Certification and Accreditation Administration of PRC

1. Scope
The rule applies to the seat products for motor vehicles of M and N categories and the outside headrest products for the front seats for motor vehicles of M1 category. (But it doesn’t apply to jump seat, lateral seat, backward seat and the seats used on the passenger cars with the degree of A and Ⅰbelongs to categories M2 and M3).
2. Certification mode
Type test + initial factory inspection + supervision after inspection
3. Basic procedure of the certification
3.1 Commission and acceptance of the certification
3.2 Type tests
3.3 Initial factory inspection
3.4 Evaluation of certification results and approval of certification
3.5 Supervision after inspection
4. Basic requirements of the certification
4.1 Commission and acceptance of the certification
4.1.1 Principle for unit classification
In principle, the seat and seat headrest products of the same function produced by the same manufacturer and having no difference in the following aspects could be classified as one certification unit.
1) The shapes and structures of the seat assemblies, allowing the differences in the materials and colors of the seat cover.
2) The structures, materials, and dimensions for the components of the seat pad and framework assemblies such as the displacement control parts and lock up parts.
3) Structures and materials of the seat pad.
4) Structure for the fixed facilities of the seat assemblies.
5) Structures, dimensions and materials of the headrest and foams, allowing the difference in the materials and colors of the headrest cover.
6) Structures and materials of the headrest jointer.
4.1.2 Documents and Materials Needed for Certification can be refered to Appendix 1.
4.2 Type tests
4.2.1 Sampling for type tests
4.2.1.1 Principles for sampling
As for one unit to be certified, if there is only one type of products, this type should be sampled.
As for one unit to be certified, if there is more than one type of products, the representative sample should be selected by the certification body. Once needed, the other types should be sampled to conduct the discrepancy tests.
4.2.1.2 Amount of samples
There should be 3 sets of samples of the same type in one unit. For electromotion seat, the adaptor shall be needed.
4.2.1.5 Disposal of the samples used for type tests and the relevant documents
After the test, certificated samples and relevant materials must be disposed in a suitable way.
4.2.2 Test standards, bases and items
For the test items and test bases, please refer to Appendix 2.
4.3 Initial factory inspection 
4.3.1 Time for initial factory inspection
Generally speaking, once the products have passed type tests, initial factory inspection can be conducted.
The time for initial factory inspection will be decided according to the application units and the amounts of products covered by the models, and as well the considerations should be given to the production scale of the factories. Usually each factory will need 2 to 6 erson/days.
4.3.2 Inspection contents
It covers the inspections on the quality assurance abilities of the factory and the inspections on its’ product consistency.
4.3.2.1 Inspections on the quality assurance abilities of the factory
The Requirements on the Quality Assurance Abilities of the Factories for Compulsory Certification (refer to Appendix 3) are the basic requirements used in initial factory inspection on quality assurance abilities for products covered in this rule.
4.3.2.2 Inspection on product consistency
During the factory inspection, the consistency of the certified products must be checked, which includes:
1) The markings of the certified products (such as name, specification, model and trademark etc) should be consistent with those stated in the documents submitted for the commission and acceptance;
2) The structures of certified products should be consistent with those of samples and those stated in documents submitted for the commission and acceptance;
3) The key components of certified products should be consistent with those of samples and those states in documents submitted for the commission and acceptance;
4) The designated on-site tests: the test items should be selected from the routine tests or verification tests (refer to the Appendix 3);
If there will be any problem in the inspection on product consistency, the certified body should give the measures for reform and consolidation、re-type test or breaking down this certification according to the situation.
4.3.3The inspections on the quality assurance abilities of factory should cover the processing workshops that produce the certified products, and the inspections on product consistency should cover the certified products.
4.4 Evaluation of certification results and approval of certification
4.4.1 Evaluation of certification results and approval of certification
Certification body will make a comprehensive evaluation to the type tests and factory inspection results. With the approval of the certification body, the certificate will be granted to the applicant (one certificate for one unit). The usage of the certificate should meet the requirements specified by the 《Administration Rule for Compulsory Certification》.
If the type tests of the certified products can not meet the requirements, a deadline (not more than 3 months) will be given for making the improvements, if the improvement can be finished timely, the re-tests can be applied; as for the disqualified factory inspection, a deadline (not more than 3 months) will be given for making the improvements, the certification body will confirm the results in a suitable way. As for those products that have passed re-examinations of the type tests and factory inspection, the certificate will be granted after the certification body has confirmed the results; as for the products that could not be improved within the time limit or that are still disqualified after the improvements are made, this certification will be terminated. 
4.4.2 Time limit for the certification
The time for certification is calculated from the date when the commission of the certification is accepted to the date when the certificate is issued, including the time for type tests, factory inspection, evaluation and approval of the certification results, and the time for preparing the certificate.
The time for type tests will not exceed 20 working days, which is calculated from the date when samples are delivered to the designated test institution.
Normally, there are 5 working days for providing the Inspection Report. It should be calculated from the date when the inspector finishes the inspection and receives the report for the corrective action regarding the disqualification from the manufacturer.
There will be not more than 5 working days for evaluating & approving the certification results and preparing the certificate.
4.5 Supervision after inspection
4.5.1 Frequency of the supervision
4.5.1.1 Generally speaking, the first supervision will be made in the 12th months after the certificate granted. Afterwards, there will be at least one inspection once a year.
4.5.1.2 There will be an increase of the frequency for the inspection when any of the following situations occurs.
1) Serious quality problems in the certificated products occur, or the responsibilities of the certificate holder are confirmed after the consumer complains.
2) The certification body has enough reasons to question the consistency between the certificated products and the requirements specified by this rule.
3) There is enough information showing that the compliance and consistency of the certified products may be influenced by the changes in terms of the organization, the working condition as well as quality assurance system in the manufacturer.
4.5.2 Content of the supervision
The supervision mode after granting the certificate should include: rechecking of the quality assurance abilities of the factory+ checking the consistency of the certificated product + random samples tests.
For the convenient of the applicant, the test results of sampling also can be considered as the result of the verification test.
4.5.2.1 Rechecking of the quality assurance abilities of the factory
It is the certification body to conduct the rechecks of the factory according to the Requirements on the Quality Assurance Abilities of the Factories for Compulsory Certification. Items 3, 4, 5, 9, which specified in the Requirements on the Quality Assurance Abilities of the Factories for Compulsory Certification must be checked for every supervision, the other items can be checked selectively. Every four years, all the items must be covered.
Normally, the supervision will take 1 or 2 man-day for each factory.
4.5.2.2 Checking of the consistency of the certificated products
During supervision, the on-site consistency inspection to the certified products should be conducted. Refer to the item 4.3.2.2 for the details.
4.5.2.3 Sample tests of the certified products
Sampling should be conducted during the supervision. Samples should be selected randomly from the qualified products produced by the factory (including the products on the production line and in the warehouse). The amount of the samples refers to 4.2.1.4.
4.5.3 Evaluation of the supervision results after granting the certificate
After the evaluation by the certification body, the certificate qualification and certificate marks can be retained continuously for the satisfactory results. If there is any disqualification on the product itself, the certificate will be withdrawn according to the situation, and the usage of the marks will be stopped, and the notification of such withdrawal will be made public. For those that disqualified on the quality assurance abilities, the correction actions should be taken and finished within three months. Otherwise, the certificate and marks will be withdrawn and stopped, and the notification of such withdrawal will be made public.
5. Certificate
5.1 Validity of the certificate
The certificate of the products covered by this rule will not stipulate the deadline of the validity in principle. The validity of the certificate depends on the regular supervision of the certification body.
5.2 Modifications of the certificate
For the certificate of the products covered by this rule, if any of the following changes occurs, an application for the modifications should be submitted to the certification body:
1) Increase/decrease the certified products of the same unit
2) There is any change on the key parts/components, raw materials, structure, manufacturing process and suppliers of the certified products.
3) There is any change of the certified products on the trademark, applicant, manufacturer or factory information (names and/or address, quality assurance system). 
4) Other changes that might influence the certification requirements.
The certification body should review and confirm the above changes and confirm the validity of the original certification results to the changes. If necessary, it should conduct the additional tests or inspections on the quality assurance system of the factory, and confirm that the original certificate remains in validity and/or re-issue a new certificate.
5.3 Suspension, cancellation and withdrawal of the certificate
The suspension, cancellation and withdrawal of the certificate should be implemented in accordance with the Administration Rule for the Product Compulsory Certification. During the suspension period and after the cancellation and withdrawal, the products should not be delivered out of the factory or imported.
6. Usage of the compulsory certification marks
The holder of the certificate should obey the relevant requirements of the Administration Rule for the Product Compulsory Certification Markings.
6.1 Mark design allowed to be used
6.2 Use of deformed certificate mark
Any forms of deformed certification mark should not be applied to the products covered by this rule.
6.3 Mark application
It could use the standard specification marks printed by nation or the marks in other modes such as printed or molded.
If the printed or molded mark is used, the manufacture code must be printed on a suitable place around the mark. The usage method of the mark should be submitted to the CNCA authorized administration department for CCC marking for a review and approval.
6.4 Mark location
The certification mark should be on a suitable place of the main part of the component.
7. Charge
The CCC charge should include the fees for application, product tests, factory inspection, approval and registration (including the fees for the certificate), and the fees for the supervisions and re-checks, annuity and certificate marks, etc. It is the Certificate Body that imposing the charge according to the relevant government regulations.
Appendix 1
Documents required to be submitted for commission of the certification
1. Description of product (the following contents at least must be included)
1.1 Seat
1.1.1 Name, standard and type of the product
1.1.2 Trademark
1.1.3 The structure of seat (Including the designed angle of the backrest)
1.1.4 Seat adjustor (Including vertical displacement, horizontal displacement, angle displacement and displacement folding, etc).
1.1.5 Locking system
1.1.6 Fixing system
1.1.7 The mass of seat assembly (kg)
1.1.8 The mass of backrest (with the headrest) (kg)
1.1.9 The seat fabric and the material of seat pad
1.1.10 Dimensions
1.1.11 Applicable type of vehicles
1.2 Seat headrest
1.2.1 Name, standard and type of the product
1.2.2 Trademark
1.2.3 Structure
1.2.4 Type of the seat adjust system (such as height, angle, etc)
1.2.5 Installation dimension
1.2.6 Material
1.2.7 Applicable type of vehicles
2. The photos that is enough to recognize the main characteristics of the products (Including the front view and side views etc).
3. Drawings of the product
3.1 Assembly drawing that is enough to recognize the main characteristics of the products;
3.2 The coordinates for point R on seat;
3.3 Circuit diagram for electromotive seat;
3.4 Sketch map for the fixed position of the seat installation on the car;
4.  List of key parts/components and key materials 
4.1 Key parts/components and materials covered by this rule can refer to Table 1
4.2 The list should include at least the names, models, specifications, inspection items and suppliers of the key parts & components and key materials.
5.  Brief introduction of the factory
5.1 Production introduction (the production scale, production capability and production history of the products that want to apply the certification.).
5.2 List of the key production facilities
5.3 List of the key inspection or testing instruments (including the names, models, specifications, quantities, accuracies, calibration periods and so on).
5.4 File catalogue of the quality management system related to attachment 3, organization block diagram/chart, and the documents for specifying the responsibilities.
6.  Necessary test reports for the products to be certified
7.  Registration papers of the applicant or factory
8.  Other documents requested by the certification body

Table 1 material for the key components of seats and Heads restraints

Appendix 2

Test items and test bases

1. Test standards

1.1 GB 15083  “Intensity Requirements and Testing Methods of Seat System for Vehicles”

(GB 15083-1994  “Intensity Requirements and Testing Methods of Seat System for Vehicles”)

1.2 GB 11550 -1995    “Performance Requirements and Testing Methods of the Seat Headrest System for Vehicles”

1.3 GB 13057-2003  “Intensity Requirements of Seat and Fixing Components on Cars for Passenger Cars”

1.4 GB 8410    “Combustion Characteristics of Interior Trimming material for Vehicles”

2. Test items

Articles in the bracket are the requirements of GB 15083-1994

Note: The standards should adopt the presently valid edition.

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