Founded in 1993, Runworld is engaged in the research and development of personal reproductive care products, and has now developed into more than 30 classified products in five brand series, including "Xini 5.5 Lotion", "Xini Care Liquid" and "Xini Women's Yin Shu Lotion". In the evaluation, the pH value of Sini is around 3.8, which is acidic and will cause some irritation to the human body. The smell of the product is strong, its foaming power is at a medium level, and 2ml of stock solution can form 5-7ml of small bubble foam after extrusion. The bacteriostatic property is weak, and gentle care is the mainstay.