Electronic Building Block Toy Circuit Programming DIY Assembly Kit Traffic Light Science experiment Physic Kit

Note:

1. Please read the instructions carefully before use and pay attention to the surrounding environment during operation.
2. Please take precautions to avoid burns on skin and clothing by wearing protective equipment such as eye protection and gloves for combustion and reagent experiments.
3. Minors should purchase and use under the supervision of a guardian.
4. After the experiment is finished, please do the follow-up work and store the experimental equipment in a place where children can not touch.