We are a research based plastic auxiliary manufacturer. We mainly offer the following three categories of products: 1. Sulfonyl hydrazide foaming agents Including p-Toluenesulfonyl hydrazide, benzenesulfonyl hydrazide, p-toluenesulfonyl semicarbazide, OBSH，2,4,6-trihydrazine-1,3,5-triazine, and thermal-balanced white foaming agent. From 2000, we began offer Zhongkai B-1 and B-2 foaming agents for hard PVC products. Zhongkai B-1 and B-2 decompose thoroughly with a narrow decomposition tempera...
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