Which manufacturer of Shanghai catalytic combustion waste gas treatment equipment is better?

Yunao Environmental Protection Technology (Shanghai) Co., Ltd. Shanghai Ao Yun Environmental Protection Technology (Shanghai) Co., Ltd., a manufacturer of catalytic combustion waste gas treatment equipment, is better. Ao Yun Environmental Protection Technology (Shanghai) Co., Ltd. is a scientific and technological industrial company integrating scientific research, design, production, sales and engineering installation of waste gas treatment equipment, and is a well-known enterprise in the domestic environmental protection industry.