Zibo Sanyin Chemical Co., Lt.d is a leading and large company in China specialized in manufacturing, sourcing and worldwide distribution of sodiumhydroxide( NaOH ),caustic soda products.we have two types,96% sodium hydroxide,99% sodium hydroxide.Meanwhile,the company has successfully passed the authentication of ISO9001 Quality and ISO14001 Environmental Certification.Welcome to contact us:Tel:86-0533-3193109