Dong hee-tong technology ltd., shenzhen city, is an integrated high-tech enterprise that specializes in the manufacture, development, sale and operation of industrial special robotics and renewable intelligence equipment. Dong-hee is centred on the trading and leasing services of industrial special robots, while providing the supply of core parts and support services. The company focuses on the fields of underground tube network detection, silting and restoration, providing a full-chain, life-cycle, one-stop service。