Both internal and external lab.

Yes.

Founded in 1999, Lianyungang Petroleum Distribution Group Co., Ltd. is a shareholding enterprise with natural persons as shareholders. It is a wholesale and retail enterprise of refined oil products approved by the Ministry of Commerce of the People's Republic of China.

Baking powder is a leavening agent, is made by adding some chemical formula soda powder, generally do pastry, add baking powder, can make pastry more fluffy, outside selling steamed buns will generally add baking powder.

Calcium hydrogen phosphate is an inorganic substance with a chemical formula of CaHPO4. It is a white monoclinic crystalline powder, odorless and tasteless, easily soluble in dilute hydrochloric acid, dilute nitric acid, acetic acid, slightly soluble in water (100°C, 0.025%), insoluble For ethanol, ......

Tricalcium phosphate used as a mordant, and also used for the coloring of ceramics, glass, paint, etc.