It was learned from Sinopec Group that in 2011, Tianjin Petrochemical's ethylene production exceeded 1.3 million tons, ranking first in China. In January 2012, ethylene production exceeded 96,000 tons, and ethylene production averaged 3,133 tons for five consecutive days. Among them, the daily output of one million tons of ethylene devices reached 3097 tons, and the daily average output of small ethylene devices reached more than 635 tons, a record high. Ski Helmet With Visor,Skiing Helmet With Visor,Snowboard Helmet With Visor,Snow Sports Helmet With Visor Dongguan Yoloon Sports Goods Co.,LtD , https://www.yoloonprotection.com