In 2007, Dongguan Bangze Electronics and Germany HSM (Heisman) joint venture to establish a sub-brand bonsai. Before the joint venture, Bonze Electronics had already begun to develop and export office equipment such as shredders and plastic machines, while HSM had 30 years of experience in manufacturing paper shredders. After the combination of the two powers, bonsai has received both capital and technology investment, product quality and popularity have leaped, and the products are sold all over Europe, America and Asia and are quite favored by the list, and are on the list of the best shredders selected by bestreviews and TechGearLab. The annual output is 3 million units, and the export sales volume is higher than that of the Ministry of Science and Technology.
 
Contrary to the high-speed but not long-lasting Miki, the ability to work continuously is the most prominent advantage of bonsai, but the shredding speed of all models is only a little more than 2m/min, and the efficiency is not as good as that of the Miki shredder when high-strength shredding is required.
 
Thanks to a high-frequency motor and patented turbine air-cooled technology, the bonsai shredder can easily run for up to 40 minutes. The 4S30 and 5S30 of the S series can even reach 4 hours, which is very suitable for users who are used to one-time shredding after accumulation, because the secret level has reached 5 and 6 respectively, and the price is not low, between 4000-5000 yuan.
 
Although the most commonly used advertising phrase for bonsai is "continuous shredding", it is still necessary to feed the paper manually, so in order to make up for the not fast shredding speed, it is recommended to choose a machine with a large amount of paper. The Black Warrior series is a representative of the large throughput of bonsai, with a 3P27A paper feed of 22 sheets / time, which is naturally incomparable with the large shredders of Van Roos, Yingmingshi and Kemi at every turn of 30 sheets / time, but the price is low, less than 2000 yuan.
 
Bonsai is one of the few automatic shredder manufacturers in China, and it is worthy of the slogan of "continuous crushing". There are 3 levels of shredding volume: 100, 300 and 600 sheets, and although the 4*10mm² shredding effect of Auto300 is stronger than that of 4*38mm² compared with Van Roos's C300, it does not have the 100% anti-jam system that Van Rooss standardizes, and the automatic shredding process may still be interrupted due to paper jams. The capacity of 53L is about 7L smaller, but the price of 20,000 yuan is 3,000 yuan higher.
 
Bonsai 328 is the only product that can compete with Miki's SD9311D at the price of 400 yuan, with a consistent long battery life, which can last for 1 hour, and is one of the best in the thousand-yuan commercial machine. Coupled with the German level 4 secrecy effect, the price of 399 yuan shows the cost performance. Of course, this price cannot be strict with the two efficiency indicators of paper feeding volume and shredding speed, and only reaches the normal level of 2m/min and 5 sheets/time.