McClay said the Chinese Embassy in New Zealand had also assured trade officials they were not aware of any pending trade sanctions against New Zealand companies.
A spokeswoman for Zespri said it was "heartened" to hear McClay's assurances.
"This is being dealt with at a government-to-government level and we have full confidence in both the New Zealand and Chinese governments on this issue."
China is Zespri's top market with sales expected to reach $500 million this season.
NZ First leader Winston Peters said it was unbelievable Government ministers had not known of Chinese concern.
"After days of obfuscation and denial the Government is now confirming it had knowledge of China approaching New Zealand exporters expressing concerns at legitimate policy concerns back in New Zealand."
He said the Chinese Government had used the threat of "industry consultation" in the past.
"China's threatened 'industry consultation' is shorthand for going outside the 2008 Free Trade Agreement to get its way. They did it on the melamine scandal, and the infant formula production plant approval process. That's how China got control of our infant formula industry in just three years under National."