深交所公告，杭州高新材料科技股份有限公司拟披露重大事项，公司股票于6月30日开市起停牌，待公司通过指定媒体披露相关公告后复牌。

Group 1 - The company, Hangzhou High-tech Materials Technology Co., Ltd., plans to disclose significant matters [1] - The company's stock will be suspended from trading starting June 30 until the announcement is made through designated media [1] - The resumption of trading will occur after the company discloses the relevant announcement [1]