Hefei Evergree Chemical Industry Co.,Ltd. is specialized in researching, developing, manufacturing for fine chemicals in China,especially in all kinds of Pyrrolidones, such as 2-Pyrrolidone, NMP,NEP,NVP, PVP K17, K30, PVP P, Cross PVP,GBL, DEDG,TRIS, etc.We are your reliable partner when you upgrade the products or importing raw materials.