Installing aim at ruler, raising loads membrane speed, reducing the photosensitive membrane wastes.

装有对位标尺，提高装膜速度，减少干膜浪费。

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Also it analysed the cause of the faults of the electronic displaying ruler in sound speed measuring unit.

对于声速测定仪中电子数显尺的常见故障原因进行了分析，并总结出维修方法。

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Whose main products has a plywood to fix ruler saw edge machine, adjustable high speed of series machine with a saw ;

其主要产品有胶合板定尺锯边机，系列可调高速锯边机；

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