Hangzhou Greenda Chemical is the only manufacturer of electronic grade tetramethylammonium hydroxide (Developer TMAH) in China, specializing in scientific research, production and sales of ultrapure electronic chemicals & fine chemicals.Capacity of Developer TMAH is 20,000t/a. As a hi-tech enterprise supported by advanced technology and equipments, Greendachem implements ISO9001:2000 to ensure the top quality & consistency.