Late last year, delegates from more than 170 countries held a week-long meeting in Busan, South Korea, to discuss binding measures to control global plastic pollution. But in the end, the fifth round of negotiations on the United Nations Plastics Convention did not reach any agreement. The ...
1. Upgrading of heating method: Replace the traditional integral heating tube with partitioned independent temperature-controlled heating plates, and divide 3-5 temperature control areas according to the different heating requirements of the plastic mold (such as edge and center areas). Each area is ...