Chlorofluorocarbons (CFC’s) were used in the past to make foamed plastic. In response to concerns about the ozone layer, polystyrene manufacturers voluntarily phased out the use of CFC’s in the late 1980s.
Link to this article：What about CFCs used in plastics?
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Investment Casting Valve Parts with Customized Designs are Accepted
Key Specifications/Special Features: Material: 304, 316, 304L, 316L, 17-4 PH, WCB, double-phasestainless steel, high degree of Ni alloy Surface finish: polishing, anodizing, hard anodizingelectrophoresis, zinc, nickel, chrome plating, powder coating andpainting Heat treatment: tempering, annealing Machining operations including cnc machining and turning Advanced CMM measuring, testing equipments and CADtechnologies In-house tooling design and manufacturing Machining […]
Detailed answers to the role of car daily maintenance
For any car, its technological innovation status will gradually deteriorate as the mileage increases, and the cooperation of various parts will inevitably produce varying degrees of wear and looseness. The vehicle protection fluid was not completely replaced, and problems such as carbon deposits and fouling occurred in the engine, power steering system and automatic gearbox. […]
Why is metal stamping dangerous?
1. During the metal stamping process, for the sake of safety, pay attention to the adjusting screw of the slider and don’t let it extend too long. In the processing of metal stamping parts, in order to prevent the mold from moving, a layer of paper can be added during reinforcement. The rotation of the […]