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Theory Wen

ChemLinked Regulatory Analyst

Theory Wen holds a Master Degree in HongKong Polytechnic University. He is now an editor and chemical regulatory analyst for ChemLinked, mainly in charge of chemical regulatory news coverage, monitoring, analysis in Asian-pacific regions.

Articles (109) Webinars (2)

India Delays Quality Control Orders for Three Chemical Products
Sep 28, 2023
On September 27, 2023, India's Department of Chemicals and Petrochemicals (DCPC) issued a Notification on the gazaette regarding the delayed implementation of Quality Control Orders (QCOs) for Maleic Anhydride, Ethylene Vinyl Acetate Copolymers, and Polyethylene Material for Moulding and Extrusion.
India Chemical management QCOs BIS
India's Official Meeting Clarifies Mandatory Declarations of IUPAC Name and CAS Number for Import
Sep 26, 2023
On September 20, 2023, a meeting regarding discussion on mandatory additional qualifiers in import/export declarations in respect of certain products has been held at the Conference Room of FICCI Headquarters in New Delhi.
India Chemical management
India Introduces EPR Regulations for Used Oils
Sep 21, 2023
On September 18, 2023, India's Ministry of Environment, Forest and Climate Change (MoEFCC) issued the Extended Producer Responsibility (EPR) regulations for used oil in the Gazette of India. The regulations are also called the Hazardous and Other Wastes (Management and Transboundary Movement) Second Amendment Rules, 2023. It shall come into force from April 1, 2024.
India Wastes EPR
India Proposes Quality Control Orders for 8 Chemicals
Sep 20, 2023
On September 13, India submitted several notifications to the World Trade Organization (WTO) regarding the proposed Quality Control Orders (QCOs) for eight substances. Comments are due to the WTO TBT Committee within 60 days from notification.
India Chemical management QCOs
China Consults on Mandatory Standard for Cleaning Products (Updated on August 28, 2023)
Sep 13, 2023
On June 16, 2023, State Administration for Market Regulation (SAMR) and Standardized Administration published a notice to consult on a draft national standard — GB XXXXX—XXXX Safety and technical standards for cleaning products. It is set to replace the existing GB/T 26396—2011 Technical specification for safety of soaps and detergents and elevate from a recommended standard to a mandatory one. Public comments will be accepted until August 16, 2023.
Chinese Mainland Others POPs Convention
ECHA Recommends Six Substances to SVHC List
Sep 08, 2023
On September 1, 2023, European Chemical Agency (ECHA) released a proposal to consult on the listing of six substances as substances of very high concern (SVHC). ECHA will accept comments until October 16, 2013.
EU Chemical management EU REACH
EU Adds 35 Hazardous Chemicals to PIC Regulation
Aug 31, 2023
European Union added 35 chemicals in the Annex I of Prior Informed Consent Regulation (PIC Regulation), including 27 pesticides and 8 industrial chemicals. It shall apply from November 1, 2023.
EU EU PIC Convention
China Notifies WTO to Adopt UN GHS Rev.8 for Chemical Classification (Updated on August 28, 2023)
Aug 30, 2023
On June 16, 2023, China’s Ministry of Industry and Information Technology (MIIT) opened up a public consultation on the drafts of GB 30000.1 Rules for classification and labeling of chemicals—Part 1：General specifications and GB 30000.X Rules for classification and labeling of chemicals— Part X: Desensitized explosives.
Chinese Mainland GHS Chemical management
EU Restricts the Use of Diisocyanates under REACH
Aug 25, 2023
Starting from August 24, 2023, diisocyanates can no longer be used on their or as a constituent in other substances or in mixtures for industrial and professional uses in concentrations equal or above 0.1% by weight, unless the user has successfully completed a training on the safe use of the substance.
EU Chemical management EU REACH
Vietnam Consults on Permissible Exposure Limits for 80 Chemicals at Workplace
Aug 24, 2023
On August 21, 2023, Vietnam's Ministry of Health released a draft Circular XX/2024/TT-BYT, which promulgates the National Technical Regulation on Permissible Exposure Limit Value of 80 Chemicals at the Workplace (hereinafter referred to as the Regulation). The Circular is proposed to take effect from May 2024 and is now open for public consultation.
Vietnam OSH Chemical management

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