... lamp, can achieve real industrial products.2.Can replace 3-5 times of high-pressure sodium lamp, saving power electricity 80 ... available, could be choose by customers,we suggest W:B 5:4. Customized acceptable. 14. All material with environmental protection request ... harmful heavy mercury15. Four type in different size, 11W,22W,33W, 44W and customized.Note!1. Please make sure in the ...