On April 15, 2023, the 133rd China Import and Export Fair (Canton Fair) was held as scheduled. The Canton Fair is an important window for my country's opening up to the outside world, an important platform for foreign trade, and an important channel for companies to explore the international mar

"A barrel-type axial flow fan" is a domestic leading high-efficiency flow channel, moving and static leaf design, so that the air flow can be ultra-long distance, large air volume, ultra-quiet to complete the air supply, to meet the closed planting and breeding positive pressure ventilation, ope