Unison (Tianjin) Int’l Trading Co., Ltd. Set up in 1999 Sept., it is an international enterprice based on chemical production and oriented by Int'l trade. Tangshan Union Chemical Factory is one of our own facilities.Unison is engaged in producing and marketing of: Inorganic chemicals; culture media (peptones); Enzymes as pancreatin and pepsin etc; soy protein isolate; food ingredients and chemicals. Quality is our top priority. All our sources are personally previewed & confirmed by in-house & independent Lab.Unison is not A to Z chemical supplier. We mainly focus on the items, which we have strong positions in.