The following is the introduction of Yang's boss:

Yang Zhanggui is a brand trademark registered by Henan Zhanggui Food Co., Ltd. in the Trademark Office on March 20th, 2006. The main service is edible starch products; Instant noodles; Coffee; Cookies; Condiments, etc.

The brand trademark "Yang Zhanggui" of Henan Zhanggui Food Co., Ltd. was successfully registered in the Trademark Office on March 20th, 2006.

Products: purified water (beverage); Bean drinks; Milk tea (not milk-based); Beer; Lactic acid drinks (fruit products, not milk); Vegetable juice (beverage); Soda; Non-alcoholic juice; Beverage making ingredients; Plant drinks.

The above information refers to Baidu Encyclopedia-Yang shopkeeper.