Large ridge greenhouse is a kind of greenhouse with high tunnel which has larger space inside and provides all-dimensional sunlight for inside plants. It is an increasingly popular trend for growers and a proven technology for crop production. Large ridge
RIVET NUTS also known as rivet nuts, pull cap, includes rivet nuts with flat head with blind hole, rivet nuts with full hex shank, rivet nuts with semi-hex shank, rivet nuts with small CSK head, rivet nuts with square shaped flat head, elevator rivet nuts