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Mainbon power lock We deliever Mainbon products to express an ethos and a point of view, an identity and a purpose, which define and differentiate ourselves in the marketplace. And we are always building internal and external capabilities to deliver superior quality products under this brand that consumers love — with improved success rate, value creation, and speed to market. Through all these, Mainbon brand is recognized worldwide.speed meter gear,driving speed meter,tricycle speed meter.