The National Chemical Standardization Technical Committee Chemical Auxiliary Branch recently revealed that the new National Standard for Rubber Antioxidants (RD) is expected to be implemented in the fourth quarter of this year. According to Du Jianguo, deputy chairman of the Chemical Auxiliary Branch, the new national standard will increase the insoluble content of ethanol, the content of active ingredients, and three indexes of isopropyl diphenylamine to effectively improve the intrinsic quality of products. It is reported that the new national standards for rubber antioxidants were reported in January. Accelerated Weathering Test Chambers Accelerated Weathering Test Chambers,Uv Accelerated Weather Testing Machines,Uv Accelerated Weathering Testers,Flourescent Uv Weathering Test Chamber DONGGUAN AIBO INSTRUMENT EQUIPMENT CO.,LTD , https://www.testchambersupplier.com