That is standard chain for B series with duplex.
The majoy material of Standard Chain are duplex chain china SUS304, SUS310, SUS316. They have the features of high power, high wear level of resistance and long life.
We have several rows chains for your needs.
Twin monitor is a professional producer of roller chain. There are two main groups: Stainless chain and carbon metal chain.
We have established a nationwide product sales net work and the products have already been sold to the countries and areas in European countries and America, Central and Southern Africa as well as South-east Asia, which are quite popular among customers.