
Hengxiang is at the forefront of the colored glass filters industry. Flexible Coupling produced by Hengxiang is very popular in the market. HENGXIANG germanium optics has been tested with regard to many aspects, including testing for contaminants and harmful substances, testing for material resistance to bacteria and fungi, and testing for VOC and formaldehyde emission. The product is exceptional in terms of durability and requires the least maintenance.

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