恒而达：目前机床滚珠丝杠主要外购，量产将优先自用验证

Core Viewpoint - The company is currently sourcing ball screws from external suppliers as its production line is still under construction, but plans to prioritize in-house production once initial mass production conditions are met [1] Group 1: Current Sourcing and Production Plans - The company's intelligent CNC equipment products primarily use externally sourced ball screws at this stage [1] - The ball screw products are a crucial part of the company's rolling functional components business strategy, with ongoing R&D and industrialization efforts [1] - Once the company achieves preliminary mass production capabilities for ball screws, it will first consider using them in self-produced or self-used machine tools for validation and application [1] Group 2: Strategic Benefits of In-House Production - In-house production of ball screws will help achieve autonomy over key components and optimize the product cost structure [1] - This move is expected to effectively validate the performance of the company's products, enhancing their market competitiveness [1]