Commonly speaking, the combined V-belt is a V-belt group in which several ordinary V-belts or narrow V-belts are connected by connecting layers. Therefore, the Heiyi group V-belt is divided into group common V-belt [AJ, BJ, CJ, DJ] and group narrow V-belt [3V (9j), 5V (15J), 8V (25J), spzj, SPAJ, sp
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