Duplex stainless steel is used in high temperature environments, mixed acid environments, especially for the Marine, petroleum, chemical equipment.
双相不锈钢适用于高温环境，混合酸环境，特别适用于海洋，石油，化工设备。
2
The seaweed-acid Na, collected from marine alga , has many functions good to human's health.
从海藻中提取的海藻酸钠也有许多有益于人体健康的生物活性。
3
Using this test method, the acid neutralization speed of different metal detergent additives and acid neutralization performances of some domestic and foreign Marine cylinder oils were investigated.