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leak detection for underground water supply and drainage pipelines
chengdu one card company is engaged in the installation and maintenance of yibang, one card, canteen sales, card swiping consumption, and attendance access control system. products include: rice sales machine, card swiping machine, attendance machine, access control machine, one-card, canteen card swiping machine, canteen check-in machine, canteen meal sales system, card swiping consumption system, attendance system, access control system, etc. usesearch | readings on this pagesearch | the site visitspeople | the total visitors to this sitesearch | today's total visitpeople | today's total visitorssearch | yesterday's total visitpeople