short supply of labor esp. technical design and operation field
industry's standard of products not covering every products in the market and delay in designing industry's standard of product
lack of readiness in product's prototype for marketing due to the low tech and poor management. need to get the prototype from abroad therefore a higher cost more time; and risk of copy product
instability of labor supply, therefore no skilled labor and more cost of training
cheaper component from china, therefore a risk of moving production base