The "CE" mark is a safety certification mark that is considered a passport for manufacturers to open and enter the European market. CE stands for European unity. Products bearing the "CE" mark can be sold within the member states of the European Union without meeting the requirements of each member state, thus achieving free circulation of goods within the EU member states. Simply put, CE certification is a mandatory certification for products entering the European market.

RoHS is a mandatory standard established by EU legislation, and its full name is the "Restriction of Hazardous Substances" directive. This standard has been officially implemented since July 1, 2006, mainly used to standardize the material and process standards of electronic and electrical products, making them more conducive to human health and environmental protection. The purpose of this standard is to eliminate six substances, including lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, and polybrominated diphenyl ethers (note: the correct Chinese name for PBDE refers to polybrominated diphenyl ethers, which is an incorrect statement), from motor and electronic products, and specifically stipulates that the lead content cannot exceed 0.1%.

Registration, Evaluation, Authorization and Restriction of Chemicals. This is the EU regulation on the preventive management of all chemicals entering its market, which was officially implemented on June 1, 2007. This is a regulatory proposal involving the safety of chemical production, trade, and use. The regulation aims to protect human health and environmental safety, maintain and enhance the competitiveness of the EU chemical industry, develop innovative capabilities for non-toxic and harmless compounds, prevent market fragmentation, increase transparency in chemical use, promote non animal experimentation, and pursue sustainable social development. The REACH directive requires that all chemicals imported and produced within Europe must go through a comprehensive process of registration, evaluation, authorization, and restriction to better and more easily identify the composition of the chemicals in order to ensure environmental and human safety. This directive mainly includes several major contents such as registration, evaluation, authorization, and restrictions.

EN71 is the regulatory standard for toy products in the EU market. Children are the most concerned and cherished group in society, and the toy market that children generally love is developing rapidly. At the same time, various types of toys often cause harm to children due to quality issues. Therefore, countries around the world are becoming increasingly strict in their requirements for toys in their own markets.

PAHs， Scientific name: polycyclic aromatic hydrocarbons. It is a type of harmful substance produced by incomplete combustion or high-temperature treatment of fuels such as petroleum, coal, wood, and combustible gases. It usually exists in petrochemical products, rubber, plastics, lubricants, rust proof oils, incomplete combustion organic compounds, and other substances. It is one of the important carcinogens in the environment  

The WEEE Directive (applicable to the entire European Union) defines WEEE as Waste Electrical and Electronic Equipment (WEEE) Directive (2002/96/EC), which refers to discarded electronic and electrical equipment. The term "waste" is defined in detail in Directive 75/442/EEC and modified in Directive 91/156/EEC.