An artificial pond reef is formed from sheet material into the shape of an inverted tub. The workflow processing apparatus includes: a file analyzing unit, a workflow selecting unit, and a workflow processing unit. The planetary transmission has at least one planet gear, at least one planet pin, and a planet carrier, the planet gear being arranged on the planet pin. Compositions and methods of using these compounds are also disclosed. Then device authentication with the transmitting device is carried out, and key information for solving the encryption is obtained.