?采用优质工程塑料注塑加工制成，密度大更牢固；
?原材料中加有抗紫外线的原料，抗老化性能强、使用寿命更长久；密封严密、开启 灵活、进风口加有防鸟网网；
?双排弹簧确保侧风窗密封良好
? Made of excellent quality engineering plastic by injection molding, higher density and more firmly.
? With UV resistant additive, air inlet has stronger anti-aging ability, longer service life, better sealing, flexible opening, with anti-bird nets.
? Double springs ensures excellent sealing.
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?采用优质工程塑料注塑加工制成，密度大更牢固；
