Capacity Introduction 1) The earliest and leading company in China. 2) The member of NKBA, ICPA and ISSFA 3) Passed certification of WQA and ISO9001:2000 4) Can offer you the high quality products under the competitive price. 5) We could make OEM - See more at: http://www.china-stone-experts.com/30mm-quartz-slab-%2C-high-quality-quartz-stone-slab-%2C-black-quartz-stone-slabs%28YQT%29-pd882544.html#sthash.Rs08IUVI.dpuf