The earlier resintechnology was based on resins which contained acid groups. These could be neutralized to allow them to become soluble in water.
早期的树脂制造技术都是以含酸基团的树脂为基础，中和后，他们可以溶于水。
2
The technology works by taking images of a face and imprinting those images on a kind of vinyl chloride resin stretched over a mold.
使用这项技术，工作人员要先给拍下人脸，然后将图像印在铺好聚氯乙烯脂的模具上。
3
The progress in the production technology for PVC resin and its raw material vinyl chloride were introduced, and the varieties and application field of PVC products were discussed.