Shenzhen Xunbanglong Technology Co., Ltd: Xunbanglong.com, a professional high quality replica factory, offers quality products, low prices, fast shipping and DDP safe shipping services.
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* KN95 level protection, filtering efficiency up to 95%, PM 2.5 pollution ash.
* The production of our masks strictly follows GB2626-2006 (China's KN95 standard).
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Embroidery thread black have many different materails. Black 120/2 polyester embroidery threads,Color number: 2170. Black 120/2 rayon viscose embroidery threads,Color number: 8271. Black 40/2 sewing
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Visible windows are optical components used to allow visible light to pass through while protecting optical instruments from the environment. They are typically made of high-quality optical materials,
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