Feature:
Made with high quality new materials
Healthy and environmentally friendly, non-toxic and tasteless
Application:it can be used in household drinking water, aquarium, air pump, laboratory
Working Temperature:-40℃-200℃
E.g：
10x12mm,it mean inneer diameter 10mm,and outer diameter 12mm;
10x14mm,it mean inneer diameter 10mm,and outer diameter 14mm;
12x16mm,it mean inneer diameter 12mm,and outer diameter 16mm;
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