Office tea brewing is most often held back by two minor issues: lacking time to tend a teapot, and not knowing how to clear spent tea leaves afterwards. A minimal setup can simply comprise a washable mug, a leaf-separating infuser or express tea maker, drinking water, and a small measure of whole-leaf tea.
If brewing solely for yourself, first choose a tea you are happy to drink daily, then evaluate your desk space and water source. Starting water temperatures and steeping times can differ for green tea, white tea, and black tea; attempt a first trial following the product page recommendations. If the water is too hot or the steep too long, shorten the duration or reduce the leaf measure. If your cup cannot promptly separate the leaves from the tea liquor, avoid dosing too much leaf at once.
No need to turn the office into a tea house
Express tea makers suit those needing rapid decanting and easy disassembly for washing; blue-and-white porcelain office mugs function more like everyday individual cups. Which is more convenient depends on the actual components, capacity, grip, and cleaning arrangements. Both categories feature in the Jiang Rong Hao catalogue; check the product page prior to purchasing rather than relying purely on lifestyle photography.
If preparing tea long-term for multiple colleagues in an office, trial smaller pack sizes first and log actual weekly consumption before procuring larger packaging. This avoids leaves sitting opened for too long and facilitates arranging hot water, cups, and storage space suited to the actual head count.
If multiple people share a hot-water kettle, it is best to note the leaf dose and cup volume on a small card; otherwise, with everyone adding leaves to personal preference, the entire pot will swing unpredictably between weak and overly strong.