Zinc selenide and zinc sulfide are common infrared materials, and their ultra-precision optical processing can achieve a high precision range, so they are widely used in military, aerospace, medical
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Ruian Ruihua Printing Packing Machinery Co., Ltd.: Ruihua Machinery is an experienced manufacturer to provide service and solutions mainly for flexo printing machine, plastic film extruder machine,
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Ningbo Yemchang Mechanical & Electrical Co., Ltd: Welcome to buy plastic gearbox, DC motor, metal gearbox, planetary gearbox, vending gearbox made in China here from professional manufacturers and
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