Shanghai Yixin Chemical Co., Ltd. places great importance on raw materials used in the manufacturing of strontium carbonate-borax powder. Each batch of raw materials is selected by our experienced team. When raw materials arrive at our factory, we take good care of processing them. We totally eliminate defective materials from our inspections.. We differentiate ourselves by enhancing the awareness of Yixin brand. We find great value in enhancing brand awareness on social media platforms. To be most productive, we establish an easy way for customers to connect to our website seamlessly from the social media platform. We also quickly respond to negative reviews and offer a solution to the customer's problem.. In order to deliver satisfactory service at Yixin Chemical, we have employees who really listen to what our customers have to say and we maintain a dialogue with our customers and take note of their needs. We also work with customer surveys, taking into consideration the feedback we receive..