... Factories & Offices Commercial Purposes3. Schools, Colleges, Universities, Hospitals4. Places where energy saving and high color rendering index lightings required. Packing ... years.And most of products have passed the CE, RoHS approval.Our advantages can be concluded as below:1. Safety: ... , CE & Hohs qualifie. Q & A:1. Can I negotiate the price?Of course,The market has not been stable lately. Prices are ...