Microscopes, Telescopes & Exploration Tools: 1 product from 1 verified supplier in Chenghai. Microscopes and telescopes use optical glass or acrylic lenses, metal or plastic tubes, and rubber eyecups. Exploration tools often combine plastic bodies with glass elements. Production involves lens grinding, tube assembly, and calibration. Certification scope for this category covers optical performance and safety, such as EN71 for toy safety and 10P and 11P for phthalates. Buyers should clarify minimum order quantity per model and packing that protects lenses during transport. Confirm whether the factory sources lenses or grinds them in house, as this affects lead time and consistency.