Kindly offer your best price for below given spark plug WBD Brand. The detail of spark plug is given below. 1. BP4HS 2. C7HSA 3. BPM4A 4. C7E Our trial order will be minimum 50,000 Pcs. So now you are requested to kindly offer you're the best price FOB any port of China. I also required Plug testing machine. I need 500 Pcs. Kindly offer me price for that also. Waiting for your early reply! Thanks.