As the most developed country, the United States once caused serious air pollution due to industrial emissions, automobile exhaust, and so on. In the middle of the 20th century, atmospheric concentrations of ozone were high in Los Angeles, and the problem of photochemical smog (a light blue smog produced by the photolysis of pollutants) was prominent. In two times in 1952 and 1955, they formed hundreds of positions within a few days. The tragic death of the old man. After painful thinking, the United States has taken a long road to cure haze. The United States adopts a regional environmental management framework to break the boundaries of the state. According to geography and socio-economic conditions, the country is divided into ten major geographic regions, and regional offices are set up for unified management. In 1990, the "Clean Air Act" passed the amendment and the states with serious ozone pollution jointly established the "Ozone Transmitting Association" to formulate relevant emission reduction standards and supervise the implementation, covering the United States in more than 20 states and the eastern Canadian provinces and achieved remarkable results. The results. In 1997, the US Environmental Protection Agency established the standards for atmospheric PM2.5 content in accordance with the Clean Air Act. It has set up thousands of particle detection sites nationwide, and the management focus on PM2.5 is strict. Monitoring, real-time disclosure, legislative norms. injector molding machineClamping Unit: Plastic Injection Molding Machine Plastic Injection Molding Machine,Plastic Hangers Injection Molding Machine,Plastic Large Trash Can Making Machine,Plastic Tableware Injection Molding Machine Shandong Qufu Xingbang Heavy Equipment Co., Ltd. , http://www.chinaxingbangheavyindustry.com
1.) Optimized Platen Design with high rigidity and enlarged space between tie bars
2.) Euromap-based Platen Layout with both T-slot & tap holes, locating design in moving platen to better suit various molds
3.) New ejection system design with longer ejection stroke, bigger space and better rigidity
4.) Hydraulic drivien gear-type mold height adjustion mechanism
5.) Relocation of mechanical safety interlock for easier operation
6.) linkage structure for front connecting rod increases connectingrod's strength greatly, as well as the whole clamping unit's rigidity & accuracy.