The company, China's largest memory chip manufacturer, currently buys components from US-based Lam Research for the manufacture and upkeep of chipmaking equipment. YMTC will be actively looking at domestic companies to replace what they can of Lam Research's technology that they require. However, it's easier said than done given the lead that Lam Research has in the field of semiconductor equipment manufacturing. YMTC is already on the US export blacklist after being added last December. That means any export of US technology to YMTC needs to get US government approval first. So, this latest news doesn't come as a surprise.