氣體考克  Laboratory Gas Cork 
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?主體:加厚銅質(zhì)
?涂層:高亮度環(huán)氧樹(shù)脂涂層,耐腐蝕、耐熱,防紫外線輻射
?開(kāi)關(guān)旋鈕:高密度PP,人體工學(xué)設(shè)計(jì),手感舒適
?閥芯類型:慢開(kāi)型/安全型/針閥