Keep me posted 保持联系 ; 和我保持联系 ; 通知我

Keep somebody posted 传达消息

i will keep you posted 我将随时通知您

keep sb posted 随时告知

I'll keep you posted 我会一直联系你

keep someone posted 不断给某人提供消息 ; 继续使某人了解某事的最新情况

Please keep us posted of 你处市场的货物供求情况