Meter Square Chain (Shantou ) Co. , Ltd. is a company manages building materials, now has already set up many chain stores in China.
平方米建材连锁（汕头）有限公司是一家经营建材的公司，已在各地设立了连锁店。
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The system design of speed chain based on electric potention meter and parameter setting of inverter are also presented with a actual paper machine as the example.