Company name: zhejiang huiren electronics co., LTD
Contact person: ms xu
Email address: email@example.com
Address: 1818 gangnan road, economic and technological development zone, huzhou city, zhejiang province
auto-refractor is a medical instrument used to check human vision. The conductive plastic potentiometer WDD35D4 product is installed inside. The distance between the pupils can be measured by a potentiometer output.