Introduction of glazed varieties of Yuan blue and white :

1, shadow green glaze: also known as blue and white glaze, used in the early and middle of the Yuan Dynasty blue and whit.......

Alloy steel pipe applications and high-pressure alloy steel pipe (material)
Alloy steel pipe is mainly used for heating surface pipes of low and medium pressure boilers (work pressure is generally not more than 5.88Mpa, working temperature is below 450°C); for high pressure .......

According to reports, the California Air Management Agency (CARB) began to implement emission standards for formaldehyde content in composite wood from January 1 this year. If products exported to the United States do not pass CARB certification, there will be a risk of being recalled. Rec.......

黄花风铃木种植技术：

1.温度和环境 黄花风铃木生长适温23-30oC，不耐�.......

Kunlun jade is a kind of nephrite. Also known as Qinghai jade. It is produced in the eastern margin of the Kunlun Mountains and is part of Qinghai Province. It is located in a metallogenic belt with Hetia.......