次石墨
次石墨是一种罕见的黑色类矿物,主要成分为碳(高达 98%)。据信,次石墨是由二十亿多年前的生物沉积物形成的。它主要发现于俄罗斯卡累利阿的顺加地区,因此得名。
1-1产品,共1产品
Your currently selected language is 简体中文.
Your currently selected location is the 英国 and your order will be billed in GBP. The delivery methods, conditions of sale and delivery points will be updated when you change the country.