Dutch payment facilitator Adyen has added WeChat Pay to the roster of local payment options available to its merchants. WeChat Pay is the payments feature within the popular Chinese WeChat messaging app.

The company says that WeChat Pay is available to all of its merchant customers through a full-service integration. Offering it will give them access to 300 million Chinese shoppers.

“We are very excited to support WeChat Pay, which will help businesses access the world’s biggest ecommerce market with a single partner. This is the final key to unlocking full access to the Chinese shopper,” said Adyen CCO Roelant Prins in a press release. “This is especially appealing to travel businesses and high-end retailers. We expect to see several business in these segments integrate WeChat Pay with us in the coming few weeks.”

In a blog post, Adyen says that Chinese consumers represent a significant opportunity for merchants because of their embrace of mobile and their interest in international brands.

“In fact,” the post says, “15% of the total population are expected to make a cross-border purchase by the end of 2016, amounting to $86 billion in total transactions. By 2020 this will likely to climb to around 70% – which will have a huge impact on global ecommerce.”