... resistance 3.Anti-dust 4.anti-aging 1.The products of plastic box seals is Ecofriendly ,high quality with competitive price. good ... sealing ring,3. the products of the preservation box seals with imported raw materials, after platinum silica gel for high temperature ... the ROHS IS09001 certificate7.The plastic box seals is Anti-dust, anti-slip, anti-aging, heat-resistance,water-proof. safe for ...