Georg Oest Mineralölwerk GmbH & Co. KG

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HB OPTICAL is a leading design and manufacturer of precision optical filters and reflectors in China.Our mission is to become a world-class R & D and production base of precision optical interference filter and reflector products. Contribute to the s

Dongguan Detian Industrial Co., Ltd. is a professional company that produces, sells, and maintains plastic machinery and equipment. The scope of projects involved includes plastic machine sales, plastic machinery peripheral equipment (auxiliary equip