COTRAN(SZ:300731) Xin Lang Cai Jing·2026-01-13 04:01Group 1 - The core point of the news is that Kexin New Materials Co., Ltd. has experienced a significant decline in stock price, dropping 5.02% on January 13, with a cumulative decline of 7.29% over three consecutive days [1] - Kexin New Materials, established on January 10, 2008, specializes in the research, production, and sales of high-performance special rubber sealing materials, providing comprehensive solutions for waterproofing, insulation, fireproofing, and sealing [1] - The company's main business revenue composition includes: 56.03% from heat dissipation metal structural parts, 16.51% from automotive sealing strips, 13.65% from insulation and fireproof materials, 10.82% from waterproof sealing materials, and 2.98% from other products [1] Group 2 - Dongwu Fund has one fund heavily invested in Kexin New Materials, specifically the Dongwu Double Triangle Stock A (005209), which holds 79,000 shares, accounting for 3.74% of the fund's net value, making it the fifth-largest holding [2] - The fund has incurred a floating loss of approximately 215,700 yuan today, with a total floating loss of 338,100 yuan during the three-day decline [2] - Dongwu Double Triangle Stock A was established on December 5, 2017, with a latest scale of 23.4891 million yuan, showing a year-to-date return of 0.44% and a one-year return of 56.91% [2]