Beijing's automobile exhaust emissions account for more than 50% of atmospheric pollutants, of which commercial vehicles are more polluting. Although the new car emissions from passenger cars will be equivalent to the Euro V rating in September this year, commercial vehicles remain at the National III level. The relevant person in charge of the Municipal Environmental Protection Bureau revealed that if the national commercial vehicle successfully switches to the national IV standard on July 1 next year, Beijing commercial vehicles will be ahead of the national standard and upgrade directly from the national III emission to the current European V-level standard. Triangle Tripods,Aluminium Tripods,Ellipse Tripods Jiangsu Laiao Material Technology Co., Ltd. , https://www.jslaiao.com