STARMASK(688721.SH)

Shenzhen Longtu Photomask Co., Ltd. engages on the design, production, and sale of semiconductor masks in China and internationally. The company provides quartz and soda mask products, as well as various technical services, such as mask design rule check, job deck view, mask cleaning, and pellicle remount services. Its products are used in semiconductor fields, such as power semiconductors, MEMS sensors, IC packaging, analog ICs, etc., as well as in various applications, including new energy, photovoltaic power generation, automotive electronics, industrial control, wireless communication, IoT, and consumer electronics.