gas spring for bartools

1.product name :gas spring for office chairs

2.approbatory international certifications: SGS TUV LGA BIFMA

3.Leading time : 7 days for 10000 pieces , 15days for 30000pcs

4.guarantee time : two years for class one , three years for class two ,five years for class three

5.packing details : usually 20 pieces in one carton , also 400-600pieces in one wooden case

6.thanks for your details conformations : the weight one piece ? the picture or drawings of you wanted ?