Huaan Securities research report points out that it is recommended to focus on investment opportunities in pharmaceutical glass and electronic yarn: 1) Pharmaceutical glass: In recent years, the proportion of injections included in centralized procurement has gradually increased, and the centralized procurement, consistency evaluation and related approval policies have formed linkage. Centralized procurement will promote the rapid transformation of pharmaceutical packaging materials to medium-boron-silicon glass, and both controlled substances and moldings will usher in a high boom development trend; the related approval system will increase the screening threshold of pharmaceutical companies for pharmaceutical glass enterprises, and the stickiness between leading enterprises and downstream customers will be further enhanced. 2) Electronic yarn: Downstream demand recovery rhythm is better than that of coarse yarn, with low inventory and no new production capacity in 2024, it is expected that the recovery of consumer electronics demand in 2024 will bring a certain degree of profit elasticity.