Before the 19th century, people used long-handled scythes to cut grass. It is a laborious job and requires many skills to keep the grass short. A British engineer named Thomas Plunkett was the first person to come up with the idea of ??making a lawnmower. He patented the first lawn mower in 1805. It was a heavy machine with a ring blade, and it didn't work very well. Other inventors saw Plunknet's machine and thought they could do a better job. The most successful was Erwin Bardeen. He was an engineer in a textile factory and got the idea for the mechanical structure of a lawn mower from a piece of machinery in the factory. The lawnmower he built in 1830 was very similar to those machines used today. The large yard with its undulating terrain and numerous surface obstacles poses a huge challenge to the engine's performance. The Vanguard engine is suitable for lawn tractors and can undertake tasks such as rake sweeping, carrying, pulling, plowing, tilling and hoeing. Basic data of Hangzhou Tongan Technology Lawn Mower: A lawn mower is a livestock machinery that can cut pasture or other crops that can be made into hay and lay them on the ground. There are two types of lawn mowers: reciprocating lawn mowers and rotary lawn mowers. Reciprocating lawn mowers were used in production. They were originally pulled by animal power and the cutter was driven by ground wheels. After the 20th century, tractor-pulled lawn mowers were developed, and in the 1930s, tractor-mounted reciprocating lawn mowers appeared. It relies on the relative shearing motion of the movable knife and the fixed knife on the cutter to cut the forage. It is characterized by neat cutting and low power requirements. However, it has poor adaptability to the forage and is easy to block. It is suitable for operations in flat natural pastures and artificial pastures. The production and use of rotary lawn mowers began in the mid-1970s. The blades on the high-speed rotating cutter head are used to impact and cut the grass. It is characterized by stable operation, strong adaptability to pasture, and is suitable for high-yielding pastures; however, the cutting is not neat enough, there are many heavy cuts, and the power required is large. Hangzhou Tongan Technology Co., Ltd.'s series of lawn mowers all use cast aluminum chassis, which are durable and advanced in design. A large-tonnage die-casting machine is selected to die-cast under high specific pressure process parameters, resulting in high density and high strength. Designed according to the principle of fluid mechanics, the grass can be collected smoothly. The thickness and ribs are added to the main stress-bearing parts to ensure the strength. The front axle is fixed with a pressure plate structure, which is more reliable. The grass collection bag is dust-proof, environmentally friendly, and easy to use. The straw collection bag is strong and durable, can effectively prevent dust from flying, and collects grass smoothly, with a large amount and beautiful appearance. Humanized design, well-selected parts and materials, it has a three-second parking function and is safe to use; the parking handle is flat, pushed forward and feels comfortable in the hand. The mowing height adjustment mechanism of the lawn mower is sturdy and has reliable positioning. The stamping parts of the lawn mower are made of high-quality cold-rolled steel plates, which have high strength, good quality, and smooth and beautiful surfaces