Zhang Wuyi, a local farmer who is interested in scientific inventions, has successfully tested his self-made miniature submarine Shuguang Hao.

A 3.6 m (12 feet) long, 1.8 m (6 feet) high, and with a maximum diving depth of 20 m (65 feet), Wuyi’s submarine can travel at a speed of 20 km per hour for 10 hours underwater and is shaped as a dolphin.

I hope to sell my submarine as a civil product at the price of about 100,000 yuan ($15,670) after safety tests, and a merchant has decided to order one in this month, he told Reuters on Monday.

Wuyi is not the only invention-enthusiast in China. Many Chinese have even made their own helicopter, cannon, robot and more, using recycled materials.

Press “Start” to view some of the top homemade gears “Made in China”.

Top Homemade Gears Made in China
Zhang Wuyi, a local farmer who is interested in scientific inventions, waves from his self-made miniature submarine "Shuguang Hao" (Top) after a safety test at Moshui Lake in Wuhan August 29, 2011 (Down). REUTERS/Jason Lee
Crazy Farmer
The killing of six people with an axe by a deranged farmer indicates the rising problem of mental disorder among Chinese adults. REUTERS/Reinhard Krause
Top Homemade Gears Made in China
Tao Xiangli stands beside his homemade submarine in a courtyard in Beijing July 10, 2008. The amateur inventor says his submarine is made from old oil barrels but fully functional with a periscope, depth control tanks, electric motors and two propellers. REUTERS/Reinhard Krause
Top Homemade Gears Made in China
A child rides a specially constructed "ice-chair" on the frozen Houhai Lake in Beijing January 15, 2008. REUTERS/Claro Cortes
Top Homemade Gears Made in China
A woman rides an unicycle at a park in Shanghai February 28, 2004. The unicycle was designed several years ago by Chinese inventor Li Yongli who called it "the number one vehicle in the world". REUTERS
Top Homemade Gears Made in China
Chinese farmer Yang Youde fires his homemade cannon near his farmland on the outskirts of Wuhan, Hubei province June 6, 2010. Yang's cannon, which is made out of a wheelbarrow, pipes and firing rockets, is used to defend his fields against property developers who wants his land. REUTERS
Top Homemade Gears Made in China
Gao Hanjie installs the rotor blades on his homemade helicopter in Shenyang, Liaoning province June 9, 2010. REUTERS/Sheng Li
Top Homemade Gears Made in China
Chinese farmer Yang Youde pushes his homemade cannon near his farmland on the outskirts of Wuhan, Hubei province June 6, 2010. Yang's cannon, which is made out of a wheelbarrow, pipes and firing rockets, is used to defend his fields against property developers who wants his land. REUTERS
Top Homemade Gears Made in China
Farmer Wu Yulu, 48, rides in a cart pulled by his walking robot near his home in a village at the outskirts of Beijing April 14, 2010. Hobby inventor Wu, who started to build robots in 1986, has invented 47 robots with different functions like jump, paint, drink, pull cart, massage, and help cooking. REUTERS/Petar Kujundzic
Top Homemade Gears Made in China
Ding Shilu, an automobile mechanic, carries out a test-flight for his self-made aircraft at a frozen reservoir in Shenyang, Liaoning province February 25, 2011. The aircraft which weights about 130 kg (287 lbs) and made of recycled materials including three motorbike engines and plastic cloth, cost about 2600 yuan ($395) REUTERS/Sheng Li
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