Mr. Kunshan, Technical Director of Tongmao Electronics Co. , Ltd. (hereinafter referred to as "Tongmao Electronics") , has been working suddenly and busily recently. As the overseas epidemic situation continues to affect the supply of motor parts in suction machines, their emergency launch of the "domestic alternative" not only ushered in a sharp increase in orders, but also became the focus of media and public attention. "

     Our company is very small and has not received this much attention in 10 years, " Mr. Wang told China business news. 

    Suction machines are a niche industry in medical devices, generating huge waves of demand during the outbreak of the new coronary pneumonia. Especially after the outbreak of overseas outbreaks, there is a sudden increase in overseas demand for vacuum cleaners. 

     According to the Ministry of Industry and Information Technology, as of April 30, China's major producers of breathing machines had supplied nearly 49,100 breathing machines to foreign countries, in addition to nearly 29,000 breathing machines for domestic use. As of May 1, China had supplied the United States with more than 5.3 billion masks, 330 million pairs of surgical gloves, 38.85 million protective clothing, 5.98 million pairs of goggles and nearly 7,500 suction machines. However, in the face of huge overseas market demand, domestic breathing machine manufacturers once faced the dilemma of "cooking without Rice" . 

     The main suppliers of core components such as voice coil motor for suction machines are all overseas, but the stagnation of production and the lack of transportation lead to the lack of supply chain. As a result, the suction machine manufacturers have turned their attention to domestic alternatives, a number of domestic electric enterprises on the line, in a rapid completion of technical challenges to start to meet the challenge of the surge in orders. 

     At the same time, China in the breathing machine manufacturing chain of the short plate is becoming more prominent. 

       Related products account for more than half of the production capacity. 

       According to the data of the World Health Organization, one out of every six patients with novel coronavirus pneumonia will have severe illness and dyspnea, and non-invasive mechanical ventilation is required, and if the condition worsens, it also uses invasive aspiration controlled ventilation. 

      As a precision instrument, it involves thousands of parts. The core components include voice coil motors, turbine fans, solenoid valves, chips, flow and pressure sensors, etc. . 

     Tomao has been in contact with the voice coil motor production since 10 years ago. When the initial product after a year and a half of development and validation, the relevant orders began to transform. But with Mao electronics almost did not pay attention to the field of its application, "

     we are also through continuous contact with customers, through this epidemic to know that voice coil motor suction machine is an important part" . 

     Mr. Wang told China business news that after the outbreak, the number of new customers was about twice that of the original customers, and the number of orders from old customers also increased more than ten times over the previous year. Some orders even placed about 20,000 electric motors at one time, "We haven't had a day off since the Spring Festival holiday. ". 

     In order to satisfy the order quantity of the motor of the suction machine, the adjustment of the production line was completed quickly by tongmao electronics. According to Mr. Wang, the company reduced the non-suction Motor Line, the relevant orders for delayed processing or increased batch, but also added 5 lines, to increase the capacity of suction motor. "Some non-smokers overseas are semi-shut down because of the epidemic, so the demand for the original product is not so big, so we can also make a product line adjustment. In previous years, the output of suction motor accounted for about 3% ~ 5% , about 2,000, and now it accounts for more than half, with a total shipment of about 20,000 a month,"Mr. Wang told China Business News. For domestic motor manufacturers, the suction motor is not the company's general production category, medical products are also higher technical requirements than industrial products. According to Mr. Wang, in order to meet the production requirements of the motor, the company needs to select more accurate materials, replace the corresponding fixture, but also in a more stringent product requirements to optimize the structure of motor design. "The main difficulty is that the suction motor requires a higher degree of stability than the industrial motor, and the better the linearity of the thrust, the more stable the gas delivery, " Mr. Wang told China Business News. To achieve this, the choice of linear bearings is crucial, "We spend a lot of time constantly testing different bearings, and we do a lot of experiments to make sure that the bearings fit with other materials, " he said. "R & D engineers work all day without a break several times. In order to ensure that the bearings can meet the high standard of motion, we are also constantly doing aging tests, product Development Cycle can be shortened from the beginning of about a year and a half to the present within a month, which includes a large number of parameters testing. The stability and reliability of the application can be guaranteed only after the factory test, terminal test and on-machine test are all passed. At the same time, testing also needs a large amount of capital investment, under the premise of guaranteeing performance, the shorter the time required for testing, the higher the cost of the required external components. 

     Regarding the future, Mr. Wang said that Tongmao electronics will still adjust its business layout according to the trend of market demand, "with the accumulation of production over the years, we are also constantly tapping the market, and we are also willing to contact other subsectors and have the ability to meet the demand" 

     the article was reprinted on CBN, invited to interview for our Technical Director Director Director Wang!