Zhejiang Huaneng Micro Bearing Co., Ltd. is a leading manufacturer and supplier of high-quality sliding door rollers, sliding window rollers, and pulley wheels, dedicated to providing innovative and reliable solutions for both residential and commercial applications. With years of experience in the bearing and overmoulding industry, we specialize in producing durable, smooth-operating components that enhance the functionality, safety, and longevity of sliding doors and windows. We offer a wide