国产欧美日韩亚洲,久久99精品国产自在现线,日韩欧美精品久久,www.黄色国产,亚洲性精品,91精品国产高清自在线观看,日韩aⅴ一区二区三区

Based on 50 year experiences of chemical and lead products, our R&D team has gained in depth understanding and study on straight and one pack stabilizers, and has established an unique formulation technology of NJC. Some members of our technical team used to work by our customers for PVC products, therefore they understand well the processing, equipment and products of our customers, they know clearly the problems and actual needs of customers and are ready to provide strong technical support with tailor made solutions.