According to the chemical composition, water reducing agent is usually divided into lignosulfonate type of water reducing agent, naphthalene series of high-efficient water reducing agent, melamine series of high-efficient water reducing agent, amino…
The number of COVID-19 infections in South Korea, Italy, and the United Kingdom continues to rise, and the Italian economy will be affected, but the government has introduced some measures…
Scientists have always wanted to expand the storage capacity of lithium-ion batteries, but now researchers have found another alternative material with good efficiency: phosphorus.…
The US Commerce Secretary has announced that the US will temporarily lift tariffs imposed on Ukraine during the Trump administration to help Ukraine recover its economy and continue to show support for the Russia-Ukraine situation. "For steel mills t…
0086-0379-64280201
brad@ihpa.net
skype
whatsapp