A "VENUS BRIEFCASE photo ALBUM" is a type of photo album that is housed in a briefcase-like container, likely designed to be portable and attractive. These albums often come in various sizes, can hold a range of photos (40-80), and may be available in different designs. They are typically made of plastic or paper and feature colorful floral designs, as well as high-quality plastic pockets to protect photos. 

A "PC 192 PHOTO ALBUM" refers to a photo album specifically designed to hold 192 photos, usually with a pocket-style design for easy insertion and viewing. It's commonly used for instant film cameras. These albums often feature high-transparency pockets for easy viewing and are designed to protect the photos from damage. 

50L AS photo ALBUM SCREW" likely refers to a type of screw post or binding screw used in photo albums and scrapbooks. These screws are typically sold in packs of 50 and designed for binding or attaching pages together. The "50 L" likely refers to the length of the screw, with "L" standing for "length". 

A "35 L AS photo ALBUM" likely refers to a specific type of photo album with a volume of 35 liters, designed for archival or storage purposes, possibly with features like clear plastic construction, strong construction, and specific dimensions suitable for items like hanging folders. The "AS" could stand for "Archival Storage" or a similar term indicating its intended use.

A 20 L (meaning a length of 20 millimeters) screw type photo album refers to a photo album that uses a screw-post binding system, where screws are inserted through the album's pages to hold them together. The "20 L" part likely indicates the screw length, with 20mm being the length of the screw. These screw posts are often made of metal and are designed to be reusable, allowing for easy page changes or refills. 

A "20 L AS photo album" likely refers to a photo album with 20 pages or a 20-sheet album, or possibly a photo album with dimensions of 20 cm by some other length and width. It could also refer to a photo album designed for storing 20 photos, depending on the type of album (e.g., slip-in, adhesive, etc.). The "L" likely represents the length measurement, and "AS" might be a brand name or a more specific type of album. 

A "15 L AS photo album" likely refers to a photo album designed to hold 15-liter (15000 cubic centimeters) worth of 4x6 inch (10x15 cm) photos. This means it can accommodate a large number of prints, potentially 360 or more, depending on the album's design. 

A "4-6 MBT ALBUM" likely refers to a photo album designed to hold 4x6 inch photos, often with a "MBT" designation indicating the brand, model, or a specific feature like "memo" or "mini." Batra Novelties offers a Natraj MBT 200 4*6 Memo Album, for example, which is a photo album that can hold 200 4x6 inch photos. The album also includes space for writing memos or notes next to each photo.