HIVISION based in China specializes in Ultem optical frames, which are made of a high-performance engineering plastic called polyetherimide (PEI). This material is renowned for its excellent strength-to-weight ratio and is also widely used in the aviation and electronics fields. HIVISION has introduced it into the field of optical frames, aiming to provide users with a modern eyewear solution that combines lightweight and high durability through material innovation, especially suitable for wearers who pursue an ultimate sense of lightness and product reliability.
From the perspective of optical frames, the core advantage of the Ultem material is its revolutionary "lightweight and tough" nature.It weighs less than many traditional frames and significantly reduces the strain on the bridge of the nose and ears during prolonged wear.However, its strength is very high, with good dimensional stability and creep resistance, which means that the frame is not easy to deform and relax due to external force or long-term stress in daily use, and the structure is very stable.
Another key advantage is its high heat resistance and the inherent stability.The Ultem material is not susceptible to shrinkage or expansion due to changes in ambient temperature, which ensures the long-term accuracy of the frame. Meanwhile, it has excellent resistance to chemical corrosion, is not easily eroded by sweat or daily cleaning agents, has a wear-resistant surface and is not prone to scratches, greatly extending the product's service life. It is suitable for long-term use as the main eyewear.
Our lightweight Round Ultem Frame features soft and smooth lines, which can well balance the facial edges and add a touch of friendliness. It is especially suitable for users with square or heart-shaped faces. The round frame shape can neutralize the hard lines of the face or the relatively wide forehead, making the overall contour look more gentle and natural, and the temperament leans towards artistic, retro or intellectual.
Our cat-Eye Ultem Glasses Frame, with its unique upward line at the tail, exudes an elegant and playful retro charm. This design can visually raise the center of gravity of the face, making it very suitable for users with round or square faces. It can elongate the facial lines and add a sense of vitality. It is also very suitable for users with oval faces (oval faces), highlighting facial advantages and enhancing fashion charm. Whether paired with simple daily outfits or stylized looks, the cat-eye shape can be the finishing touch.