TISI-R-PC-01 (04)        4 March 2009 
 [English translation] 
  
 
TISI-R-PC-01 
 
 
[Logo of Thai Industrial Standards Institute (TISI)] 
 
Thai Industrial Standards Institute (TISI), 
Ministry of Industry 
 
  
Criteria for Product Certification  
 
 
 TISI-R-PC-01 (04)        4 March 2009 
 [Royal Garuda Emblem] 
 
Proclamation of Thai Industrial Standards Institute 
Re: Criteria for Product Certification  
 
 It is appropriate to revise the criteria for produc t certification to ensure that the TISI’s product 
certification is conducted appropriately, clearly, transparently and fairly, complying with the 
international certification system and developing the industrial sector so that it has capacity to 
compete.  The Industrial Product Standards Council (IPSC) passed a resolution to agree to revise the 
criteria for product certification at a 557-1/2552 meeting on 21 January 2009.   The TISI, therefore, cancelled the TISI’s pr oclamations concerning the criteria for product 
certification dated 4 March 2008 and 26 January 2009 and anno unced new criteria for product 
certification as per the details  appended to this proclamation. 
  These new criteria are to be enforced from now on. 
 
                  Announced on 4 March 2009. 
  
               (Mrs Rattanaporn Jungsanguansit) 
    Secretary  General  for the Thai Industrial Standards Institute
 TISI-R-PC-01 (04)        4 March 2009 
  
Criteria for Product Certification 
 
1. Scope 
 
This document specifies definitions, objectives, pr inciples, inspections for granting permission, 
monitoring after a licence is granted, and cond itions that must be followed by licensees for the 
certification of both voluntary pr oducts and compulsory products. 
 
2. Definitions 
 
2.1 “Standards” means industrial product standards specified and proclaimed by the Minister of 
Industry. 
2.2 “Voluntary products” means industrial products wh ich have specified and proclaimed standards. 
2.3 “Compulsory products” means industrial produc ts which have specified and proclaimed 
standards and have a Royal Decree  determining that they have to comply with the standards. 
2.4 “Sor Mor Or.” means Thai Industrial Standards Institute (TISI). 2.5 “Officials” means officials acco rding to the Industrial Standard s Act, B.E. 2511 (1968) and its 
amendments. 
2.6  “Applicants” means persons wishing to apply for a licence showing the voluntary product 
standards symbol or persons wishing to apply for a licence to produce or import compulsory products. 
2.7 “Licensees” means persons granted a licence in accordance with Section 16, Section 20 and 
Section 21 of the Industrial Standards Ac t, B.E. 2511 (1968) and its amendments. 
 
3. Objectives 
 
These Criteria for Product Certification have b een specified with the following objectives: 
3.1 To conduct the certification in an appropriate, clear, transparent and fair manner. 
3.2 To comply with the international certificati on system and to develop the industrial sector so 
that it has capacity to compete. 
3.3 To comply with the Ministry of Industry’s policy to increase the potential of the industrial 
sector. TISI-R-PC-01 (04)        4 March 2009 
  
4. Principles 
 
Consideration of granting a licence for displayi ng, producing or importing products is based on the 
following principles: 
4.1 Product quality complies with  the specified standards. 
4.2 Product quality control systems must be ade quate for maintaining c onsistent product quality 
in compliance with the standards. 
 
5. Inspections for Granting Permission 
 
5.1 Inspections before a licence is granted will be conducted as follows:  
 5.1.1  Inspection of product manufacturing 
5.1.2  Inspection of products 
5.2 Inspection of product manufacturing  
The TISI will conduct the inspection as follows: 
5.2.1 Inspect the production of products by manufacturers both in the country and abroad 
by assessing the product quality control system s of factories that follow the activity 
requirements of Appendix Khor (B). 
5.3 Inspection of products  
The TISI will conduct inspections as follows: 
5.3.1 Products will be inspected according to specifi c criteria in the certification of related 
products by officials collecting samples for inspection. 
5.3.2 Products will be assessed according to the re quirements in the standards by giving 
appropriate consideration to test results as follows:  
(1) Test results from designated testing laboratories.  
(2) Test results from testing laboratories approved by the TISI according to criteria 
specified by the TISI.  TISI-R-PC-01 (04)        4 March 2009 
  
6. Monitoring after a Licence is Granted 
 
To ensure that licensees consistently maintain prod uct quality in compliance with standards, the TISI 
will monitor after licences are granted by inspecting product m anufacturing by licensees and 
inspecting products  as follows:  
6.1  Inspecting product manufacturing by licensees  
The TISI will conduct inspections as follows: 
6.1.1 Where permission is given to show the standard symbol with the products or to 
produce industrial products 
(1) Inspect product manufacturing by manufacturers by assessing the product 
control systems according to the activity requirements in Appendix Gor. (A) of these criteria for product certification and collecting samples from 
licensees for inspection. 
(2) Consider the acceptance of factory assessment results instead of product 
manufacturing inspections (1) in the case of manufacturers who have been assessed by an organisation accepted by the TISI in compliance with 
standards specified by the TISI. 
In general, the TISI will conduct insp ections of manufacturing and inspect the 
products of each licensee once a year. If insp ection results show that the licensee can 
consistently and continuously maintain pr oduct quality in compliance with standards, 
the TISI may consider adjusting and reducing the number of manufacturing 
inspections and product inspections. If, on th e other hand, inspection results provide 
reason to believe that the licensee cannot consistently and c ontinuously maintain 
product quality in compliance with standard s, the TISI may consider adjusting and 
increasing the number of manufacturing in spections and product inspections as 
appropriate. 
 6.1.2 In cases where permission is give n to import industrial products  
(1) Unless otherwise specified, the TISI  will once a year inspect the production 
of products by manufacturers abroad by assessing the product quality control systems according to the activity requir ements in Appendix Gor. (A) or by 
inspecting the product quality control sy stems of importers according to the 
activity requirements in Appendix Khor. (B) of these criteria for product certification, depending on the case. TISI-R-PC-01 (04)        4 March 2009 
 (2) Consider the acceptance of factory assessment results instead of product 
manufacturing inspections (1) in cases where manufacturers abroad have been assessed by an organisation accept ed by the TISI in accordance with 
standards specified by the TISI. 
(3) Unless otherwise specified, the TISI will collect product samples from 
licensees at each time of import to send for inspection. If there is reason to believe that imported products do not co mply with standards, products will 
be inspected and released only when  inspection results comply with 
standards.
 
6.2  The TISI will inspect and monitor licen sed products by purchasing samples from 
distribution points as appropriate, and will in form licensees. The cost of the inspections 
must be paid in line with advertised rates.  
 
7. Conditions that Must be Followed by Licensees 
 
7.1 Licensees must comply with methods of i ndustrial product quality control in order to 
comply with the standards. Licensees must be monitored after a licence has been granted as specified in (6) above, and 
must arrange for factories specified in th e licence to have the following product quality 
controls: (1) There must be methods of quality control in compliance with activity requirements in 
the product quality control systems as per Appendix Gor. (A) or Appendix Khor. (B). 
(2) There must be controls/ inspections/ testi ng on all listed items in compliance with the 
standards specified. Inspection of each liste d item may be carried out by the licensee 
or others who have been given authorisation. 
(3) For the inspection of product manufacturing by manufacturers both in the country and 
abroad, factories must as a minimum have testing tools for listed items in compliance 
with the requirements under specific criteria for certifying relevant products, and 
must conduct regular tests at the factories. 
(4) For the inspection and assessment of the product quality control systems of importers, 
there must be item testing as specified in the specific criteria for certifying relevant 
products by the following means: 
(4.1) Importers must have item testing tools in compliance with requirements 
under specific criteria for certifying pro ducts, and must conduct regular tests 
at the licensees’ locations, or  TISI-R-PC-01 (04)        4 March 2009 
 (4.2) Importers must send li censed products for item testing in compliance with the 
requirements under specific criteria for certifying relevant products at testing laboratories approved by the TISI. 
(5) The TISI must be informed every time information is changed from that given to the 
TISI where there might be an impact on the quality of the licensed product. 
(6) The TISI must be informed of the quantity of licensed product manufacturing. Every 
half calendar year, information must be given within 30 days of the date due.  
 In the case of imports, licensees must in each case inform the TISI of the products 
imported and the product q uantity prior to import. 
(7) Complaints concerning product quality must be recorded and kept. Amendments must 
also be recorded and copies sent to the TISI on request. 
7.2 In cases where licensees disp lay standards symbols on indus trial products and voluntary 
products:  
Licensees must display standards symbols on li censed products within 30 days of the date 
notice is received from the TISI. 
7.3 Licensees must pay the cost of product inspections within 15 days of receipt of a 
payment notice. 
 TISI-R-PC-01 (04)        4 March 2009 
  
Appendix Gor. (A) 
Activity requirements in the product quality control systems of manufacturers 
 
Licence applicants must arrange for factories for which they are applying to have product quality 
control systems in compliance with activity requi rements in the following product quality control 
systems:  
Activity requirements in the product quality control systems of manufacturers 
1. Control of raw materials 
2. Control during production 
3. Control of ready-made products 
4. Control of products which do not conform with the requirements 
5. Identification and traceability 
6. Product preservation and storage 
7. Machinery used in manufacturing and maintenance 
8. Control of inspection, measuring and testing equipment 
9. Training (skills, knowledge and capabilities) 
10. Control of quality records 
 
 TISI-R-PC-01 (04)        4 March 2009 
  
Detailed requirements in the product quality control systems of manufacturers 
 
1. Control of raw materials 
Licence applicants must arrange for factories for which they are applying for a licence to have 
controls/ inspection/ testing to ensure that ra w materials (meaning raw materials, components, 
packaging, work produced by sub-contract ors and raw materials which are assets of 
customers) used for manufacturing have good quality and comply with the specified quality 
criteria by: (1) Setting out random sampling plans, quality criteria and ways of checking each listed 
item of raw materials on receipt and/or methods of checking raw materials on receipt. 
(2) Conducting inspections and/or checking ra w materials on receipt in compliance with 
specified plans. 
(3) Recording inspections/ test resu lts and keeping records as evidence. 
 
2. Controls during production 
 2.1 Production process planning 
Licence applicants must arrange for fact ories for which they are applying for a 
licence to create a chart showing the steps of production and product quality controls, which must specify the following, as appropriate: (1) The production  process. 
(2) Control of conditions during the pr oduction process; inspection and testing 
during production. Criteria specifying r esults from this planning must be on 
appropriate forms used in organisations. 
 2.2 Production process controls 
Licence applicants must arrange for fact ories for which they are applying for a 
licence to control production according to the production process under inspection and control conditions, which include: (1) Information that specifies requirements or the product specifications required. (2) Work practices, as necessary for peop le working on the production process. 
(3) Usage of appropriate tools, machinery and equipment. 
(4) Usage of tools for measuring and monitoring. (5) Conducting the measuring and monitoring. (6) Conducting product release, delivery and post-delivery activities. 
(7) Necessary records as  evidence that the production process and products 
received comply with requirements. TISI-R-PC-01 (04)        4 March 2009 
 2.3 Permission to use the production process where products cannot be inspected 
directly (if applicable)  
Licence applicants must arrange for fact ories for which they are applying for a 
licence to prove that the production process is  validated, and give permission to use 
the production process in cases where produc ts cannot be inspected directly; for 
example, inspection, measuring includi ng any processes in which product faults 
might appear after products have been used or after delivery. 
Proof of validation of  the production process  must show that the capability of the 
production process for the products complies with requirements. 
 
3. Control of ready-made products 
Licence applicants must arrange for factories for which they are applying for a licence to 
show details or methods, frequencies, quantities and ways of inspections/ testing to ensure 
that quality of ready-made products complies with the specification in the standards (inspection/ testing of each listed item may be performed during an y stage of production 
process but it must be ensured that later steps do not affect a change in quality, OR may be 
performed by the licensee or others who have b een given authorisation.). Also, inspection/ 
testing results must be recorded and the results must be kept as evidence. 
 
4. Control of products which do not conform to the requirements 
Licence applicants must arrange for factories for which they are applying for a licence to 
create working methods and practices to ensure that products which do not comply with 
requirements are specified and controlled in order to prevent unintentional usage and to 
eliminate non-compliance, which may be carried out by:  (1) Re-manufacturing or repairing products in order to comply with to the criteria 
specified. 
(2) Changing the quality level.  (3) Giving permission for use by persons with  authorisation or releasing the products. 
(4) Destroying them. 
Non-compliance, including actions taken on the pr oducts, must be recorded and records must 
be kept as evidence. TISI-R-PC-01 (04)        4 March 2009 
  
Notes 
1. Products that do not comply with requiremen ts include raw materials, work in process, 
ready-made products and faulty pr oducts returned by customers. 
2. Products that have been re-manufactured and/ or repaired must be reinspected according 
to the details specified in product inspection plans. 3. Where there have been changes to quality l evels (lower than allowed in the licence) or 
permission has been given to use products that  do not comply with the requirements, the 
standards symbol cannot be displayed on the products. 
4. Factories that are applying for a licence should analyse information concerning non-
compliance with
 product requirements  to determine  methods of improvement.  
 
5. Identification and traceability  
Licence applicants must arrange for factories for which they are applying for a licence to: 
(1) Identify products with appropriate materials throughout production. 
For identification of ready-made products, information must be given at least in 
accordance with industri al product standards. 
 (2) Identify product status with appropriate materials. 
If ther are traceability requirements, product identification must be controlled and recorded in compliance with requirements. 
 
6. Product storage  
Licence applicants must arrange for factories fo r which they are applying for a licence to store 
products, including raw materials, work in pr ocess, and ready-made products in compliance 
with requirements until delivery. This storage must  include identification, transfer, packaging, 
storage and prevention of deterioration. 
 
7. Machinery used in manufacturing and maintenance  
Licence applicants must arrange for factories for which they are applying for a licence to have 
appropriate manufacturing tools, machinery a nd equipment and have adequate capacity to 
produce products in compliance with the standa rd, including preventative maintenance of 
important machinery, tools and equipment as appr opriate to ensure that capacity in producing 
products in compliance with the sta ndards is maintained consistently. TISI-R-PC-01 (04)        4 March 2009 
  
8. Control of inspection, measuring and testing equipment  
Licence applicants must arrange for factories for which they are applying for a licence to have 
as a minimum inspection, measuring and testing of equipment as specified in the specific 
criteria for product certification of each product to test regularly at factories, including control and calibration of  inspection, measuring and testing equipment that affects the measurement 
of quality in order to be confident in the inspection, measuring and testing results by: 
(1) Calibration or verification in the period speci fied or prior to usage in comparison with 
measuring standards which can be verified up to national or inte rnational levels. (In 
cases where no standards are specified, basic methods used for calibration or verified 
status must be recorded.) 
 (2) Showing calibration status. 
 (3) Prevention of customisation, both deliberate and unintentional. 
(4) Prevention of damage and deterioration  during transfer, maintenance and storage. 
If the inspection, measuring and testing equipment are found not to comply with requirements, factories must have appropriate methods of action to deal with inspection, 
measuring and testing equipment, and the affected  products, and keep records of the results of 
calibration and verification. Software used for inspection, measuring and tes ting must be confirmed for accuracy prior to 
usage, and reconfirmed for accuracy when necessary. 
 
9. Training (skills, knowledge and capabilities)  
Licence applicants must arrange for factories for which they are applying for a licence to have 
personnel who affect product quality with su fficient knowledge and capabilities to perform 
the tasks, as follows: 
(1) Specifying necessary capabilities required fo r personnel who affect product quality. 
(2) Organising training or other action methods in order to have specified capabilities. 
 (3) Accessing results of organised training or other action methods. 
Producing and keeping appropriate records of  educational background, training, skills 
and experience.  
  TISI-R-PC-01 (04)        4 March 2009 
  
10. Control of quality records  
 Licence applicants must arrange for factories for which they are applying for a licence to:  
(1) Specify methods of identification, storage, care, usage, duration of storage and 
destruction of the records. 
 (2) Establish and keep records to s how compliance with the requirements. 
(3) The records must be clear, easy to read a nd kept in a way that can be used easily in 
appropriate conditions to prevent damage, deterioration or loss. 
(4) The period of keeping records must as a minimum cover the TISI’s follow-up 
inspection cycle.  
  Notes: Records can be kept in any fo rm; for example, paper or electronic form. 
 TISI-R-PC-01 (04)        4 March 2009 
 Appendix Khor. (B) 
Activity requirements in the product quality control systems of importers 
 
Licence applicants must have product quality control systems in place in compliance with activity 
requirements in the following product quality control systems:  
 
Activity requirements in the product quality control systems of importers 
1. Purchasing 
2. Control of products which do not comply with the requirements 
3. Identification and traceability 
4. Product preservation and storage 
5. Control of inspection, measuring and testing equipment 
6. Training (skills, knowledge and capabilities) 
7. Control of quality records 
 TISI-R-PC-01 (04)        4 March 2009 
 Detailed requirements in the product quality control systems of importers 
 
1. Purchasing 
Import licence applicants must specify and ma intain methods in writing to ensure that 
products for which import permission is requ ested comply with specified standards. 
(Gor) Assessing product manufacturers  Licence applicants must: 
(Gor. 1) Assess and select product manufacturers based on their capacity to 
meet requirements for purchasing or sub-contracting including quality systems and requirements for quality assurance. 
(Gor. 2) Specify selection criteria, assessment and reassessment after 
purchase. 
(Gor. 3) Create  and maintain quality records concerning the results of 
assessing product manufacturers and th e results of any actions arising 
from the assessment. 
(Khor) Purchasing information 
Products purchased must have specifications according to the standards (TIS); 
purchasing documents must as a minimum contain the following information:  
(Khor. 1) Design, class, type or other clear specifications. (Khor.2) Names or specifications, a nd detail requirements with document 
issuing code, specifications, designs, process requirements and other 
relevant technical information, including requirements for 
certification of product quality, methods, process, machinery and personnel. 
(Khor.3) Names, numbers and document issuing code for the quality systems 
that will be used. 
(Kor) Verification of purchased products 
(Kor 1) Licence applicants must verify purchased products to ensure that 
purchased products comply with purchasing requirements (TIS) 
(Kor 2) Licence applicants must show  details or methods, frequencies, 
quantities and ways of inspection to ensure that quality of ready-
made products complies with the specifications specified in the standards prior to delivery/ sale in the market. The product testing list must not be less than the testing list specified for the manufacturer’s 
factories to test regularly at factor ies specified in the specific criteria TISI-R-PC-01 (04)        4 March 2009 
 for product certification. Inspection/ testing results must be recorded 
and records must be kept as evidence. 
 
2. Control of products which do no t comply with the requirements 
(1) Licence applicants must specify and main tain the methods which ensure prevention 
of both deliberate and unintentional delivery/  sale of products which do not comply 
with requirements. The stated control must  have clear identification by separating, 
amending and improving (where a pplicable) in order to comply with standards (TIS). 
(2) Licence applicants must recall products fro m all markets in which they have been 
delivered/ sold in the market in cases where it is later found that these products do not comply with standards.  
 
3. Identification and traceability 
Licence applicants must identify products as appr opriate and specify the date of import in so 
that it can be verified with appropriate materials.  
 
4. Product storage 
Licence applicants must maintain products in compliance with standards (TIS) until delivery. 
This storage must include identification, tr ansfer, packaging, storage and prevention of 
deterioration. 
 
5.  Control of inspection, measuring and testing equipment 
Licence applicants must arrange as a minimum to  have measuring and testing of equipment as 
specified in the specific criteria for product certification of each product to test regularly, including control and calibration of  inspection, measuring and testing equipment that affects 
the measurement of quality in or der to be confident in the inspection, measuring and testing 
results by: (1) Calibration or verification in the period speci fied or prior to usage in comparison with 
measuring standards which can be verified up to national or inte rnational levels. (In 
cases where no standards are specified, methods used for calibration or verified status 
must be recorded.) 
 (2) Showing calibration status.  (3) Prevention of customisation, both deliberate and unintentional. 
(4) Prevention of damage and deterioration  during transfer, maintenance and storage. 
If the inspection, measuring and testing equipment are found not to comply with 
requirements, factories must have appropriate methods of action to deal with inspection, TISI-R-PC-01 (04)        4 March 2009 
 measuring and testing equipment, and the affected  products, and keep records of the results of 
calibration and verification. Software used for inspection, measuring and tes ting must be confirmed for accuracy prior to 
usage, and reconfirmed for accuracy when necessary. 
 
6. Training (skills, knowledge and capabilities) 
Licence applicants must arrange personnel wh o affect product quality to have sufficient 
knowledge and capabilities to perform the tasks an d keep appropriate records of training as 
evidence.  
 
7. Control of quality records  
Licence applicants must keep records of pr oduct quality to show compliance with the 
standards (TIS). All records must be clear, easy to read and kept in a way that can be accessed 
easily in appropriate conditions to prevent dama ge, deterioration or loss, and the appropriate 
period for keeping the records must be specified : The above records of quality may be in any 
form, such as paper or electroni c format. These quality records mu st be ready to deliver when 
requested by the TISI.