On July 30, 2013, the Taiwan Ministry of Economic Affairs Standards Inspection Bureau released CNS 15663 “Guidance to reduction of the restricted chemical substances in electrical and electronic equipment”, which is an optional conformity standard for the content of harmful substances in electrical and electronic products in Taiwan. At the same time, as measurement methods for harmful substances, CNS 15050 “Electrical and electronic products -Measurement methods for 6 restricted substances (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers), and CNS 15479 “Measurement methods for mercury content in fluorescent lamp tubes” were also released.

Chapter 5 of CNS 15663-Marking of presence” has been added to product inspections, which was to gradually incorporate RoHS requirements. The aim of the system is to require manufactures to mark hazardous substances honestly, gradually reduce the content of hazardous substances.


Overview of regulations under CNS 15663

Nature of the regulations Optional conformity standard
Definition of products Devices whose power supply voltage is less than 1000V AC or 1500V DC.
Restricted substances
Restricted substance Chemical symbol Reference value of content percentage wt%
Lead and its compounds Pb 0.1
Mercury and its compounds Hg 0.1
Cadmium and its compounds Cd 0.01
Hexavalent chromium and its compounds CrⅥ 0.1
Polybrominated biphenyl and its compounds PBB 0.1
Polybrominated diphenyl ether and its compounds PBDE 0.1
Marking requirements Marking of presence
Regulated products
  1. large appliances
  2. small appliances
  3. IT and communication equipment
  4. consumer equipment
  5. lighting equipment (including electronic light bulbs and household lamps)
  6. electrical and electronic tools (with the exception of large-scale stationary industrial tools)
  7. toys, leisure and sports equipment
  8. automatic dispensers
  9. other equipment
Exclusion products
  1. products used to protect national security and confidentiality, and products used for military purposes
  2. non-power driven products
  3. products that can achieve their main functions without the need for electrical and electronic components.
  4. equipment that is one part of other products
  5. battery
  6. large and fixed industrial machinery


Forms of presence marking

1. Tabular form

Unit Equipment:LCD TV Model NO:XXX
Hazardous substances and elements
lead (Pb) mercury (Hg) cadmium (Cd) Hexavalent chromium (CrⅥ) Polybrominated biphenyl (PBB) Polybrominated diphenyl ether (PBDE)
Circuit board over 0.1wt%
Case over 0.01wt% over 0.1wt%
Glass panel
Speaker over  0.1wt%
Accessories (remote control, etc.)
Remark 1. “over 0.1wt%”and “over 0.01wt%” indicate that the content percentage of restricted substances exceeds the standard value.
Remark 2.「○」 indicates that the content percentage of the restricted substances in the item does not exceed the reference value.
Remark 3.「-」 indicate the restricted substances in the item is excluded.

2. Description form

If the restricted substance of “unit” is an exclusion item, and the content of other restricted substances does not exceed the content reference value, then content condition can be indicated using description form.

Example: [Device name: LCD TV, Model NO:YYY], its glass panel and accessories contain lead, but lead for these two unit is exclusion item.

  • Product inspection mark
Inspaction type Not exceeding the reference value Exceeding the reference value
Registration for product check (RPC)
Type-approved batch inspection (TABI)
  • RoHS (XX,XX) indicates that the content of restricted substances(XX) in the product exceeds the reference value.
  • Example: RoHS (Pb) indicate that the lead element content of some unit in the product exceed the content reference value which specified in the Appendix A in CNS 15663.
  • Example: RoHS(Cd,Cr+6,PBB)indicates that the content of cadmium, Hexavalent chromium, Polybrominated biphenyl of some unit in the product exceed the content reference value which specified in the Appendix A in CNS 15663.

In accordance with the provisions of Section 5 “Marking of presence“ in the CNS 15663(2013 edition), which is the Taiwanese version of RoHS, the target product shall indicate the content of restricted substances on the product body, package, label or instruction manual. However, when submitting (disclosing) the presence condition of restricted substances via websites, it shall clearly state the URL on the product body, package, label, or instruction manual. The state location of URL does not apply to the provisions of Section 5.3 in the CNS 15663.


Regulated products (Partial)

Date of promulgation Additional products Enforcement date
December 29,2015 6 items such as personal computer July 1,2017
December 29,2015 Network multimedia player, projector July 1,2017
September 29,2016 92 items such as wireless keyboard January 1,2018
February 24,2017 63 items such as electric blankets January 1,2018
March 24,2017 Water server January 1,2018
March 27,2017 32 items such as single phase AC motors January 1,2018
April 10,2017 5 items such as automatic data processor January 1,2018
April 24,2017 8 items such as LED with built-in ballast January 1,2018
April 25,2017 Low-pressure AC preheating activation type straight tube fluorescent lamp , Circular tube type instant start type fluorescent lamp (HCFL: hot cathode fluorescent tube) for general lighting, electronic ballast for fluorescent lamp January 1,2018
October 5,2017 Non-vehicle charger for electric bicycles, non-vehicle charger for electric assisted bicycles January 1,2019
May 3,2018 Power supply for automobile cigar socket January 1,2019
January 11,2019 Electronic toilet seat July 1,2020
May 27,2019 Wireless charger January 1,2020

* You can refer to the original text list from the hyperlink on the date of promulgation.


Related organizations

Safety and Health Technology Center(SAHTECH)

Established in March 2017, responsible for operations related to chemical safety and list management. And in order to promote chemical substances management for enterprises, it also holds explanation sessions for persons in charge.

Poisonous and Deleterious Substances Bureau

It’s a 3rd level central organization established by the Environmental Protection Administration of the Executive Yuan on December 28, 2016. The aim of the bureau is to protect national health by conducting management, investigation and inspection for the sources of poisonous and chemical substances.