石英制品，緣于樂華
Quartz products, due to Lehua
致力于成為一流石英制品生產(chǎn)商
Committed to becoming a leading producer of quartz.
精益求精制造產(chǎn)品 設身處地服務用戶
Be reliable. Be sincere.
石英：致力于產(chǎn)品高端提升積極開展國外市場
