All products of Jing Si Books & Café have standard processes and quality specifications, and the relevant certifications are as below:
- 淨斯茶：通過 SGS 470 項農藥檢測皆零檢出，並通過紅茶的有機認證。
Jing Si tea: passed SGS 470 pesticide tests with zero detection, and also passed the organic certification of black tea
- 五穀粉、香積飯系列：通過 ISO22000 / HACCP 認證 /Halal 清真認證。
Multi-Grain Instant Mix, Jing Si Instant Rice series: Passed ISO22000 / HACCP certification / Halal certification.
Eco-friendly tableware series and packaging materials: all have passed the inspection of plasticizers.