428 econemy drive chains carbon steel motorbike chains 428 428H-5M

Merchandise are made of high good quality alloy metal manufacturing. The plates are punched and squeezed bores by precision technological innovation. The pin, bush, roller are machined by high-efficiency computerized products and automated grinding tools, then via heat remedy of carburization, carbon and nitrogen defense mesh belt furnace, surface blasting procedure and so forth. Assembled precision by Internal hole position, spin riveted by pressure to make sure the overall performance of the complete chain.

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