Shares of solar company Hanergy Thin Film Power dropped nearly 50 percent on Wednesday, causing the company's chairman to lose $15 billion in mere minutes. Then on Thursday, Goldin Financial Holdings and Goldin Properties plummeted as much as 60 percent each. Those companies said they were not aware of any reason for the massive moves lower, according to a Reuters report.
Gartman said the sudden price collapses could be a troubling signal for some other high-flying Chinese names. "There's never just one cockroach," he said on CNBC's "Fast Money" last week. "This is going to become a series of events I'm afraid."
Gartman compared the wild swings this week to similar circumstances that investors in the volatile U.S. biotech sector have seen again and again. For example, earlier this month shares of Puma Biotechnology lost nearly a quarter of their value when the company's cancer trial results missed expectations.
The analyst said that just as investors shouldn't shy away from buying broader biotechnology exchange traded funds just because some components see wild moves, so too should they not be discouraged from investing in China because of this week's volatile swings.
Read MoreWith tech firms facing China hurdles, play these names: Pro
According to Gartman, if the trend of high-flying Hong Kong names crashing back to earth continues, it will "give us a chance, finally, to be a buyer of Chinese stocks."
Dramatic price swings "will send enough people to the sidelines, put enough fear in people to stay on the side and send prices lower," he said. "Then you can be a buyer, and you should be."
Gartman said that if China's market corrects between 10 and 20 percent in the next couple months, he would look to get exposure to what he calls the shift to a "consumer-driven, consumer-oriented" society via two exchange-traded fund (ETF) plays.
"I think the easiest thing is to go to FXI and PEK. Those are the 2 dominant ETFs. I think that's the only way for the public to be involved in a market that divergent, that far away, that geographically removed."