價格：免費
檔案大小：43.4 MB
版本需求：需要 iOS 8.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：簡體中文, 繁體中文, 英語
Chain stone + agent channels by the city electricity system, constitute a "+" stone the Internet break the information asymmetry between regions, lower transaction costs, make stone material industry division of labor production, avoiding homogeneity competition.At the same time improve the labor productivity of stone industry, can effectively enhance the resource utilization of stone industry;
支援平台：iPhone, iPad