The slip on flange has good sealing performance, space saving and good quality. It can not only prevent water leakage of the joint, but also reduce the diameter of the seal. Therefore, flat welding flange is a good pipe fitting to save space and cost duri
Investigations at different materials, such as aqueous solutions of nanoparticulate siliciumdioxid powder and spray frozen agglomerates with a variable solid content have demonstrated the considerable advantage of ultrasound when compared with other techn
The anti-pest PO greenhouse film uses the Japanese outer coating technology, which is to apply a special anti-fogging dripping additive on the surface of the treated special polymer resin, which can make the dripping time longer and ensure sufficient ligh