Zhengzhou Dongshen Petrochemical Technology Co., Ltd. is an innovative high-tech enterprise dedicated to the research, development and production of new nano materials, oil field chemicals, energy-saving & maintenance products for industrial equipments transport industry such as cars, ...

Cooldo is a manufacturing and service enterprise that specialized in the design major metal melting, heat treatment & forming industry. has more 8 members(factories) which is able to provide whole production line for foundry steel making plant.Cost-effective,highly efficient, durable ...