Company - China Liansu (2128.HK) experienced a significant stock price increase, rising by 7.37% to HKD 7.14, marking a nearly three-year high since mid-March 2023, with a year-to-date increase of approximately 54% [1] - Guojin Securities highlights that PVC pipes, primarily used for building drainage and electrical wire sheathing, have low product prices and severe homogeneity, with differentiation based on cost advantages. Increasing production scale can achieve economies of scale and reduce raw material and production costs [2] - China Liansu has established over 30 production bases across 20 provinces in China and overseas, positioning itself as a leading player in the PVC market [2] Industry - The improvement in real estate expectations, combined with rising upstream raw material prices, has led Zhongtai Securities to be optimistic about the profitability recovery of companies with pricing power, indicating an upward turning point in both industry prosperity and valuation [1] - The real estate sector is expected to stabilize and recover, driving a rebound in building material demand, while the continuous rise in prices of upstream raw materials such as asphalt, polypropylene, and polyethylene is expected to transmit cost pressures to building materials [1] - The plastic pipe market is relatively fragmented, with different business models and products among companies. As of the end of 2024, the market concentration ratio (CR20) for plastics is approximately 40%, with leading companies including China Liansu (15%), Gongyuan Co. (3%), and Weixing New Materials (approximately 2% total output, with PPR products around 8%) [2]