The main products are series of B/ F413F、 B/ F513F, Pressurized and non- Pressurized MWM valves, Series of large projects’ Machine set products with the types as STEYR67/ 68、 YC6M220G、 YC6112ZLQ、 YC6M390- 30、 WD615. 46 and WD618. 39、 WD12、 TBD234、 TBD236, FL912 engineering plant valves, Series of ship valves products with the types as MTU396/ BV6FZ、 H6190、 N6160、 DY- 300、 CW200、 DK- 28、 DK- 20、 YC6T4500- 20. These products are primarily used for matching the products of Weifang Diesel Factory, Guangxi Yuchai Machinery co. , LTD, Hangzhou Automobile Engine Factory, Chongqing Weichai Engine Factory, Weiyang Diesel Factory, North of China Diesel Factory, Guangxi liuchai Dynamic co. , LTD and Henan Diesel Factory.   The materials of the valves are special steels with high wear resistance, High corrosion resistance and high seismic performance. The intake valves materials generally use marten site, Such as 4Cr9Si2、 4Cr10Si2Mo、 5Cr9Si3 、 8Cr20Si2Ni 、 85Cr18Mo2V and so on. The exhaust valves materials generally use austenitic, Such as Cr21Mn9Ni4N、 5Cr21Mn9Ni4Nb2WN、 6Cr21Mn10MoVNbN、 NiCr20TiAl.