The utility model relates to a lead-free aluminum alloy rubber coating valve which adopts the environment-friendlylead-free aluminum alloy as a metal body of the valve.
本实用新型涉及采用环保无铅铝合金为气门嘴金属体的一种无铅铝合 金包胶气门嘴。
2
Lead is not a friendly metal.
铅是不是一种对人体友好的金属。
3
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