The unique roller system, make excellent guide rail, accurate balancing mechanism, ensure that door body smooth operation, lighter and noise.
独特的滚轮系统，制作精良的导轨，精确的平衡机构，确保门体运行平稳、轻巧、无噪音。
The unique roller system, make excellent guide rail, accurate balancing mechanism, ensure that door body smooth operation, lighter and noise.
独特的滚轮系统，制作精良的导轨，精确的平衡机构，确保门体运行平稳、轻巧、无噪音。
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