Japan ST2016 is the Japanese Toy Safety Standard, also known as the "Japan Toy Association Toy Safety Standard ST2016". This standard specifies requirements for the mechanical and physical properties, combustion safety, and chemical safety of toys to ensure that they do not cause harm to children during use. This standard is voluntary in nature, but only products that comply with it are allowed to bear the ST mark on the product itself, which has a significant impact on the acceptance of toys in the Japanese market.

The ST2016 testing project for exporting children's toys to Japan includes the following parts:

1. Physical performance testing: Children's toys may be subjected to physical forces such as impact, pulling, and folding during use. Therefore, the physical performance of toys is also one of the standards that needs to be evaluated. The testing items include impact resistance, wear resistance, tensile resistance, etc.

2. Irritant substance detection: Irritant substances may cause harm to children's skin, eyes, and mucous membranes. Therefore, it is necessary to detect irritating substances in children's toys, including heavy metals, phthalates, etc.

3. Conductivity testing: With the development of technology, more and more children's toys are equipped with built-in electronic components. However, the conductivity of electronic components may cause harm to children. Therefore, it is necessary to detect the content and conductivity of conductive materials in children's toys.

4. Flammability testing: Fire is a major threat to the safety of children's toys. Therefore, it is necessary to test the flammability of children's toys to ensure that they do not ignite when exposed to open flames or high temperatures, thus ensuring the safety of children.

Overall, the testing items for children's toys exported to Japan ST2016 mainly include testing for irritants, physical properties, conductivity, and flammability. These testing items are all aimed at ensuring the safety and quality of children's toys. Only after passing various tests can children's toys meet Japanese safety standards, thereby protecting children's health and safety.