【Three Major Manufacturing Bases】 - Xinjiang Manufacturing Base 50+ automated production lines / Export hub for the Belt and Road Initiative - Ningbo Manufacturing Base 50+ automated production lines / High-end process R&D center - Tianjin Manufacturing Base 160+ precision equipment clusters / Top manufacturer in North China - Daily production capacity exceeding 1 million sets - Dual guaratee with export quality contral + customization - Fast delivery with lead time of 20 days