Kaikai Technology (688835.SS) opened at 209 yuan on Aug. 25 after being issued at 61.36 yuan, a 240.61% jump that gave investors allocated one 500-share lot an immediate paper gain of about 73,800 yuan, or roughly $11,000. The debut was among the strongest STAR Market IPO performances in recent months. The company develops and makes precision fluid-control components and equipment for semiconductors, consumer electronics, automotive electronics and new energy. Its products have been validated by well-known domestic manufacturers and supplied in volume for front-end equipment used in advanced-node processes, including 7nm and below logic chips. The result highlights investor demand for hard-tech companies with import-substitution potential, while also underscoring the growing divergence in IPO subscription returns and the need to assess technology, industry exposure and valuation rather than subscribe indiscriminately.