PRODUCT Nature & Technology ~From Sudare Wooden Blinds to Roll Screen~ SHYZIP The perfect shielding of light and sound.A hidden key player for smooth and reliable lifting and lowering. CONSTON Constant Torque Springs :Roll Screen Components for all angles from vertical to horizontal ZIPrail ZIPrail is a panel screen system that is simple structure and compact shape which allows it to be installed in any location. ZIPcurtain ZIPcurtain is a “super-quiet curtain rail” that makes barely any sound when operating.