Which company is the first high-tech enterprise listed on the main board in Gansu Province?

Gansu Michelle Petrochemical High-tech Equipment Co., Ltd. Gansu Michelle Petrochemical High-tech Equipment Co., Ltd. was officially listed on the Shanghai Stock Exchange. This is the 23rd high-tech enterprise in the province and the first high-tech enterprise listed on the main board in the province. In the computer, the motherboard is also called the motherboard, which is equivalent to the trunk of the whole machine, which is equivalent to being familiar with the aircraft carrier and providing a platform for various fighters.