How many subsidiaries does Hainan Nanhai Development Holding Co., Ltd. have?

Hainan Nanhai Development Holding Co., Ltd. has three subsidiaries. According to relevant information, the three subsidiaries of Hainan Nanhai Development Holding Co., Ltd. are curtain wall engineering Shenzhen Sanxin Technology Development Co., Ltd., Guangdong Konghai Special Glass Technology Co., Ltd. and Beijing Sanxin Crystal Decoration Engineering Co., Ltd.