| Style: | Simple |
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| Material: | Metal |
| Rotary: | Rotary |
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Application and features
| Boss chair gas spring | 40mm, 60mm, 80mm |
| Office chair gas spring | 100mm, 120mm, 140mm |
| Bar chair gas spring | 160mm, 180mm, 200mm, 260mm, 330mm |
| Gas spring Standard | Meets all applicable ANSI/BIFMA performance standards and TUV LGA DIN4550 performance standards allow 360 degree of smooth and noiseless swivel reliable seal performance defect less than 0.03% |
| Weight | thickness | quality&safety | price |
| Class 1 | Φ28 1.2mm, Φ50 1.0mm | so so quality | cheaper |
| Class 2 | Φ28 1.5mm, Φ50 1.0mm | normal quality | cheap |
| Class 3 | Φ28 2.0mm, Φ50 1.2mm | better quality | high |
| Class 4 | Φ28 2.5mm, Φ50 1.5mm | best quality | higher |
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