Group 1 - The core point of the article is that Watte Co., Ltd. (002886.SZ) has successfully passed supply chain tests for its products with a major North American robotics client, although the shipment volume this year represents a small proportion of the company's overall sales [1] Group 2 - The company has engaged in investor interactions to communicate its recent achievements [1] - The successful testing indicates potential growth opportunities in the North American market for the company's products [1] - The current shipment volume, while small, suggests room for expansion in future sales [1]