Please upload detailed photos, I can’t judge without pictures. However, it can generally be judged that there are three bicycle brands under the Giant Machinery Group (GIANT): Giant (printed as GIANT), Li Yifu (printed as LIV, a specially designed women's bicycle brand), and Momentum (printed as MOMENTUM, casual and classic , art cars).

The following 3 pictures are of LIV:

MOMENTUM, the following 2 pictures: Nowadays, low-key trademarks are popular internationally, so some main marks are dark or printed inconspicuously. Location

GIANT. Taking this as an example, generally the following accessories will have labels printed on them. XTC 800, the first picture is the logo GIANT on the head tube of the frame, the second picture is the XTC and GIANT printed on the upper and lower tubes of the frame, the third picture is the model number "800" on the rear fork

< p>The front fork must have an exclusive logo (the model name of the front fork, such as WIN30, WIN32, COAST AIR, FOX, ROCKSHOX, etc., varies according to the grade and price of the car): The picture below is the FOX brand front fork specially used by Giant. . The picture also shows that the tires are MAXXIS High Roller II, and the rims are Giant XC1 (artistically deformed).

The handlebar set has a logo (the handlebar is commonly known as "faucet"). The front cover of the stem, the handlebar, the grip and the seat post all have the logo of the Giant handlebar set brand. The basic model is printed with GIANT, which is good. The ones are CONTACT and CONTACT SLR):

You can see the green circle in the picture below: GIANT printed horizontally and vertically on the handle, and GIANT on both sides of the handle. The picture below shows Giant's high-end handlebar sub-brands CONTACT and CONTACT SLR: The seat cushions are for low-end, mid-to-low-end cars, and the cover is printed with GIANT. The mid-to-high or high-end ones use seat cushions from professional brands such as Prologo, which are all directly seat cushion brands. The logo: The picture below is of the ATX series. The GIANT transmission kit (including thumb shifters, front derailleurs, and rear derailleurs) must have a black logo printed on the seat cushion, which is the logo of the transmission kit brand. The most common one is Japan's SHIMANO. , No. 1 brand of transmission system), some low-end cars have Microshift (microshift). Shifting kits are a very complicated technology, and if the OEM can’t make them themselves, they just have to buy them (Shimano, NO2’s quick-shift or micro-shift ones).

The brakes are also made by specialized brake brands. The basic one is Tektro (Yanhao), and the upper grades are Shimano.

The next four pictures are of xtc 820. You can see in this order: the brake lever of the oil brake is SHIMANO (the specific model is the entry-level MT200, there is a small model number on the back of the brake lever body), and the front derailleur is Shimano's SLX 11 The rear derailleur is Shimano's SLX 11-speed (a professional mid-range grade among Shimano mountain bike gear sets) (visible on the outside are "SLX", "SHIMANO" and "made in japan"). You can’t see the photo location in the picture), the frame’s chainstays have “XTC” and “820” printed in white, as well as the SLX’s 11-speed flywheel. If the chain is a Shimano set, the chain pieces will be stamped with SHIMANO. If it is a third-party compatible brand (Giant mostly uses the NO2 brand of chain, KMC is Guimeng, and KMC generally also has a stamped logo). The picture below is one of Shimano's chains, stamped with SHIMANO and model HG53:

The picture below is from KMC, stamped with KMC:

Transmission system (including bottom bracket bottom bracket) , crankset and crank, flywheel) are mostly marked. All Shimano products must have it (SHIMANO, some need to be carefully looked for because of their hidden positions. For example, the logo of the bottom bracket and the logo of the flywheel are printed on the locking cover, and this cover is blocked after being installed on the frame, but you Post a detailed photo of the flywheel. Experts can tell at a glance whether it is from Shimano or a third-party product such as Richi from the appearance and tooth shape). The picture below shows the XTC820 crankset. It uses Prowheel and the model number is CLAW (gray on the end of the crank).

The picture below is from Giant XTC ADV. The crankset is Shimano’s professional high-end deore XT:

Pedals also have logos, such as those from GIANT or VP (Taiwan Hongguang), some of which are caused by the mold structure. The sign is placed in a relatively hidden location. Mid- to high-end bikes are not equipped with pedals (because the pedals they are equipped with are only for trial use and cannot meet the needs of advanced and experienced riders).

There are also logos on the rims. For example, Giant's most basic ones are printed with GIANT or only have a very small logo. The taller ones are printed with letters such as XCR, The picture below shows the rim of the XTC 820. The black letters are the rim model PINETA, and the small white letters are GIANT.

Tires must have signs. The most basic one is Giant's own, printed GIANT. Better ones use CST (genuinely new), better ones use MAXXIS (Maxxis), etc. And no matter which brand of tire it is, it has a model number, and the model number directly represents the purpose of the tire. Clearly printed on the sidewalls, such as QUICKSTAND and QUICKCROSS (Giant's own basic mountain bike tires), such as IKON (Maxxis' multi-functional mountain bike off-road tires). The picture shows the high-end Maxxis REKON RACE used by Giant (pictured above), and Giant’s own basic model QUICKSTAND (pictured below):