Sweaters are knitted by machine or by hand. The history of Sweater knitting is very long. Human beings used leaves and animal skins to cover their bodies in primitive life, and later learned to use knitting techniques, so sweaters were produced. With the evolution of civilization and the invention of technology, there are more and more types of sweaters, with better and better quality. The function of sweaters is generally to keep warm, but with the progress of mankind, people began to pursue the beauty of sweaters.
Yacheng Knitting Co., Ltd. can mass produce customized high-quality knitted garments, including sweaters, Custom Knit Sweaters, Knitted Pants, Knitted Skirt, Knitted Shoes , Knitted Scarves and Knitting Blanket. If you need to order knitted products, please contact us.
Sweater Oem Sweater,Oem Mens Sweater,Popcorn Sweaters,Women Custom Sweater DongGuan YaCheng Knitting Co., Ltd , https://www.oemknittingyc.com
Our company can produce various styles of sweaters. You are welcome to provide drawings and we will customize them for you.
Ionic liquid catalytic synthesis of ethylene carbonate
The ionic liquid catalyzed ethylene carbonate project undertaken by the Lanzhou Institute of Chemical Physics of the Chinese Academy of Sciences has recently passed the scientific and technological appraisal of Gansu Province. The project solved the key technical problems such as low yield of synthetic ethylene carbonate, low utilization of raw materials, and ionic liquid catalytic recycling, and provided technical support for the effective use of carbon dioxide emissions and downstream product development of ethylene carbonate. The LZC type complex ionic liquid catalyst developed in this project has high catalytic activity and good selectivity. With an ionic liquid catalyst of less than 6 parts per million, the yield of ethylene carbonate can be as high as 98%. They researched and developed the catalytic cycle process, which effectively achieved the recycling of the catalyst and reduced the material consumption and energy consumption. The ethylene carbonate products produced by this technology have reached the national quality requirements, and refined products can meet the needs of high-end products in the electronics industry.