Shanghai Huangmao Electrical Technology Co., Ltd., located in Shanghai, is a long-term professional engaged in electronic insect repellent, electric cat (in addition to the four pests) series of products, and is also a "pioneer" in China's insect repellent (rat) industry. Although Royal Cat mainly produces products that repel insects and rats, its shoe shine machine also has a good performance, three brushes work together to clean the dead corners of the upper, with excellent cleaning power, low noise, the only regret is that the price is slightly expensive.